Question

sin 15° cos 15°-cos 75° sin 75°​

Answer 1

Answer:

given,

sin15 cos15 - cos75sin75

we know that,

sin(90-A)=cosA, cos(90-A)=SinA

therefore,

=sin(90-75)cos15 - cos75 Sin(90-15)

=cos75 cos15 - cos75 cos15

=0

hope it's helpful for you