What is 'cotx'?
cot is a short way to write 'cotangent'. This is the reciprocal of the trigonometric function 'tangent' or tan(x).
Therefore, cot(x) can be simplified to 1/tan(x).
Using trigonometric rules, an alternative way to write 1/tan(x) is cos(x)/sin(x).
So cot(x) = 1/tan(x) = cos(x)/sin(x)
LG
Related Maths GCSE answers
All answers ▸We have two straight lines AB and CD. The coordinates of A,B and C are A(1,3), B(5,9) and C(0,8). The point D lies on the line AB and is halfway between points A and B. Is the line CD perpendicular to AB?
(x+2)/(x-3) - (x-1)/(x+3) can be written in the form (ax+b)/(x^2-9). Work out the value of a and the value of b.
Expand the brackets: (x-3)(x+4)
Solve the equation ((2x+3)/(x-4)) - ((2x-8)/(2x+1)) = 1. Give your answer to 2 decimal places.