Question

If tan theta is equals to b, then cos2theta + b sin2 theta is equals to

Answer 1

Answer:

hope it helps uh......

Answer 2

cos2theta =

(1-tan^2theta)/(1+tan^2theta)

sin2theta=(2tan theta)/(1+tan^2theta)

cos2theta+sin2theta=

{1-(b^2)+2b}/{1+b^2}