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Using Trigonometric Identities prove that [(tan^2x)(cosecx)]/sinx=sec^2x

You should begin by identifying all the Trigonometric Identities that may be useful in this problem. Specifically, cosecx=1/sinx tanx=sinx/cosx 1/cosx=secx and possibly tan^2x + 1= sec^2x. I began by c...

MB
Answered by Mary B. • Maths tutor
9695 Views

A cylindrical beaker has a height of 16 cm and a diameter at its bottom of 10 cm. What is its volume? Give your answer to 2 decimal places.

As the beaker is a cylinder, we know the formula of its volume is (pi x (radius)2) x height.

Since the radius = 1/2 diameter and the diameter = 10 cm, the radius = 5 cm.

AS
Answered by Aneesh S. • Maths tutor
23971 Views

Find the exact value of the gradient of the curve y=e^(2-x)ln(3x-2) at the point on the curve where x=2.

This is a typical gradient question for A2 papers, as it requires use of the Product Rule and Chain Rule, as well as knowledge of e^x.

Firstly, we can see that we will need to use the Pro...

SK
Answered by Sophie K. • Maths tutor
10694 Views

Explain how to solve simulatentous equations.

A simultaneous equation is an equation with 2 unknowns( X and Y). You will have 2 seperate equations. By adding or subtracting the 2 equations, eliminate one of the unknowns(X0). You are now left with ...

PP
Answered by Parth P. • Maths tutor
4308 Views

How do you change the subject of the formula?

​All that changing the subject of the formula means is basically getting a letter on its own on one side of the equation. To begin, let's take a relatively simple example.

Make x ...

RT
Answered by Robbie T. • Maths tutor
108500 Views

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