Question

Solve the equation : Tan x = cot(x+20)

Answer 1

tan x = cot(x+20)

cot(90 - x) = cot(x+20) (tan a = cot(90 - a)

90 - x = x + 20

90 - 20 = x +x

70= 2x

x = 70/2

x = 35