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 ▸

Solve the following simultaneous equations: 2y+x=8 , 1+y=2x


f(x) = (x+1)^2 and g(x) = 2(x-1); Show that gf(x) =2x(x+2)


10 The table gives information about the heights of 50 trees. Height (h metres) Frequency 0 < h - 4 ,8, 4 < h - 8 ,21, 8 < h - 12, 12, 12 < h - 16, 7, 16 < h - 20, 2. Work out an estimate for the mean height of the trees.


Find the roots of the formula x^2 + 4x + 3 by factorising.