Question

if sinx+ cos x=1 ,then value of sin2x is​

Answer 1

Answer:

this is very simple yaar

Answer 2

Answer:

By squaring

sin x + cos x=1

sin square x + cos square x + 2cos x sin x = 2sin x cos x.

(sin2 x + cos 2 =1)

2 cos x sin x =0

and

sin 2x = 2 cos x sin x

so

sin 2x = 0.