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As can be seen by studying the gradients of sin(x) at key points such as 0, 90, 180, 270, 360 degrees, the gradient of sin(x) at any point, x, is equal to cos(x). [This would be shown on sketches of the f...

In this question, we are being asked to combine the functions f(x) and g(x). The function gf(x) is 'putting in' the function f(x) into g(x). What we do is substitute whatever f(x) is into the g function l...

So firstly, when we do a rationalisation problem, we are trying to get rid of any surds in the denominator(the bottom part of a fraction). Surds are numbers that have been square rooted and do not equal a...

Firstly we draw the triangle. From here we can see that the hypotenuse is side AB and the angle we know is between this side and the side we are trying to find the length of. This is when we can use eithe...

In a non-calculator paper use long division to decimal places when converting fractions.In this scenario, I would use the whiteboard to go through long division step-by-step.Answer = 0.875