Question

of x belongs to [0,2π] then no. of values of x satisfying the equation tan8x= cosx-sinx/cosx+sinx is
12
18
24
36
​

Answer 1

Answer:

36 I think if not answer your self

Answer 2

Answer:

tan8x=(cosx)^2-(sin x)^2/(sinx)^2+(cosx)^2+2cosxsinx.....(by multiplying cosx+sinx)

sin8x/cos8x=cos2x/1+sin2x