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Solve the equation tanx/cosx = 1 for 0°<x<360°

Firstly we need to rearrange this equation so that it contains only one trigonometric function of x (i.e. tanx, cosx or sinx) which will make it much easier to solve. We can do this in the following way: Fir...
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Answered by Linetta A. • Maths tutor
25976 Views

How should I organize my answer to Question 2 on IB History Paper 1

The key to any Paper 1 question is to organize your answer in a manner which makes you examiner feel like they're on cloud nine. Remember, your examiners go through a number of papers, which means that rathe...
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Answered by Taha H. • History tutor
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Integrate the function f(x) = (1/6)*x^3 + 1/(3*x^2) with respect to x, between x = 1 and x = 3^(1/2), giving your answer in the form a + b*3^(1/2) where a and b are constants to be determined.

We can imagine our function as a curve. We have x values on the x axis and f(x) values on the y axis of our graph. The question is essentially asking us to find the area between the curve, the x axis and the...
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Answered by Daniel V. • Economics tutor
4268 Views

How can I improve my French without actually trying?

Sadly, we can't all go to France on holiday to polish up our French... A way of learning vocabulary that I have found very useful and also enjoyable is to listen to songs and the radio in French. You could a...
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Answered by Mathilde R. • French tutor
3060 Views

Simple binomial: (1+0.5x)^4

Expand (1+0.5x)4 , simplifying the coefficients. Step 1. Draw Pascal's triangle to find the coefficients 1 ; 1 2 1 ; 1 3 3 1 ; 1 4 6 4 1. As you can see, each row starts and ends with 1. The numbers in betwe...
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Answered by Srikka S. • Maths tutor
8339 Views