391 results for "cos".
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Question in Standard Maths
Students are given a diagram with 2 triangles. They are given 2 randomised lengths, and a randomised angle of depression.
They need to compute an angle by subtracting the angle of depression from 90°. Then they need to use the sine rule to calculate a second angle. Then they need to use the alternate angles on parallel lines theorem to work out a third angle. They use these to calculate a third angle, which they use in the right-angle triangle with the sine ratio to compute the third side. They then use the cos ratio to compute the length of the third side.
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Question in Standard Maths
Student is given a triangle with the value of 2 sides and 1 or 2 angles and asked to find the value of the third side using the cosine rule. Triangle can be acute or obtuse.
Side and angle lengths are randomised. Units are randomised.
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Question in Standard Maths
Student is given a triangle with the value of 3 sides and asked to find the value of an angle. Triangle can be acute or obtuse.
Side and angle lengths are randomised. Units are randomised.
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Question in MASH Bath: Question Bank
Using the given information to complete the equation $y= A \cos{ \left( \frac{2 \pi}{P} x \right) }+V $ that describes an electromagnetic wave and calculating the smallest angle, $x$, for which $y=y_0$.
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Question in Transition to university
Given the cost of hiring a room for a given number of hours, compare with competing prices given per hour and per minute.
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Question in Transition to university
Given a description in words of the costs of some items in terms of an unknown cost, write down an expression for the total cost of a selection of items. Then simplify the expression, and finally evaluate it at a given point.
The word problem is about the costs of sweets in a sweet shop.
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Question in Martin's workspace
Solve a trigonometric equation involving a conversion to tangent by division by cosine.
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Question in Ed questions to share
Used for LANTITE preparation (Australia). NC = Non Calculator strand. NA = Number & Algebra strand. Given a description in words of the costs of some items in terms of an unknown cost, write down an expression for the total cost of a selection of items. Then simplify the expression. The word problem is about the costs of sweets in a sweet shop. The quantity of each type of sweet is randomised.
This question was modified from a Newcastle University question.
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Question in David's workspace
Finding the cost including VAT
rebelmaths
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Question in MASH Bath: Question Bank
Find the $x$ and $y$ components of a force which is applied at an angle to a particle. Resolve using $F \cos \theta$. The force acts in the positive $x$ and positive $y$ direction.
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Question in MASH Bath: Question Bank
Find the $x$ and $y$ components of a force which is applied at an angle to a particle. Resolve using $F \cos \theta$. The force is applied in the negative $x$ and negative $y$ direction.
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Question in MASH Bath: Question Bank
Rewriting a trigonometric expression of the form $A\cos(\theta)\pm B\sin(\theta)$ to either $R\sin(\theta+\alpha)$ or $R\cos(\theta+\alpha)$ by calculating $R$ and $\alpha$.
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Question in MASH Bath: Question Bank
Rewriting a trigonometric expression of the form $A\sin(\theta)+B\cos(\theta)$ to $R\cos(\theta-\alpha)$ by calculating $R$ and $\alpha$.
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Question in MASH Bath: Question Bank
Rewriting a trigonometric expression of the form $A\cos(\theta)-B\sin(\theta)$ to $R\cos(\theta+\alpha)$ by calculating $R$ and $\alpha$.
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Question in MASH Bath: Question Bank
Rewriting a trigonometric expression of the form $A\sin(\theta)-B\cos(\theta)$ to $R\sin(\theta-\alpha)$ by calculating $R$ and $\alpha$.
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Question in MASH Bath: Question Bank
Rewriting a trigonometric expression of the form $A\sin(\theta)+B\cos(\theta)$ to $R\sin(\theta+\alpha)$ by calculating $R$ and $\alpha$.
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Question in MASH Bath: Question Bank
Simplifying the trigonometric expression $\frac{\sin^2(x)}{1\pm \cos(x)}$ using the trigonometric identity $\sin^2(x)+\cos^2(x)=1$.
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Question in MASH Bath: Question Bank
Calculating the integral of a function of the form $a \cos(bx)$ using a table of integrals.
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Question in MASH Bath: Question Bank
Calculating the integral of a function of the form $\frac{\cos(x)}{\sin(x)+a}$ using integration by substitution.
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Question in MASH Bath: Question Bank
Calculating the integral of a function of the form $\cos(x) \sin^2(x)$ using integration by substitution.
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Question in MASH Bath: Question Bank
Calculating the integral of a function of the form $ax \cos(x^2+b)$ using integration by substitution.
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Question in MASH Bath: Question Bank
Calculating the integral of a function of the form $\frac{\cos(x) \sin(x)}{(\sin(x)+a)^2}$ using integration by substitution.
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Question in MASH Bath: Question Bank
Calculating the integral of a function of the form $e^{ax} \cos(x)$ using integration by parts.
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Question in MASH Bath: Question Bank
Calculating the integral of a function of the form $ax^2 \cos(bx)$ using integration by parts.
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Question in MASH Bath: Question Bank
Calculating the integral of a function of the form $(a+bx)\cos(x)$ using integration by parts.
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Question in MASH Bath: Question Bank
Calculating the integral of a function of the form $ax \cos(bx)$ using integration by parts.
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Question in MASH Bath: Question Bank
Calculating the area enclosed between a cosine function and a quadratic function by integration. The limits (points of intersection) are given in the question.
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Question in MASH Bath: Question Bank
Find the derivative of a function of the form $y=a \cos(bx+c)$ using a table of derivatives.
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Question in MASH Bath: Question Bank
Calculating the derivative of a function of the form $\frac{a\sin(x)}{bx+c \cos(x)}$ using the quotient rule.
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Question in MASH Bath: Question Bank
Calculating the derivative of a function of the form $\ln(ax) \cos(bx)$ using the product rule.