Question

find the value of cos15-sin75

Answer 1

cos15-sin75.
cos15 -sin(90-15).
cos15 -cos15. (sin(90-a)=cos a)
=0.
therefore final answer will be zero.
if my answer is helpful for you then please mark as brain liest

Answer 2

Hii dear here is your answer...........
cos15-sin75=?
solution......
15+x=90
x=90-15=75
so 15 can be written as 90-75

cos(90-75)-sin75
as we know cos (90- theta)=sintheta
sin75-sin75=0

hope it helps you......