Question

if sin theta=3/5 the value of(1-cos2 theta)is​

Answer 1

Answer:

sin theta=3/5

1-cos 2 theta

=(sin^2 theta +cos^2 theta)-

(cos^2theta-sin^2theta)

=sin^2 theta+cos^2theta-

cos^2theta+sin^2theta

=2sin^2theta

=2.(3/5)^2

=2.9/25

=18/25

Answer 2

answer is 9/25 it's simple