Question

Sin 5 cos85 + cos5 sin 85?

Answer 1

$\huge{One}$

Answer is One

Explanation

=SIN (90-85) COS (85)+COS(90-85) SIN85

=COS 85 COS 85 + SIN 85. SIN 85

$= {cos}^{2} 85 + {sin}^{2} 85$

=1

Answer 2

Solution: wecolme to the concept of the trignometry.

We know that cos(90-x) = sinx

And sin(90-x)= cos x .

Now solve the problem you get

Answer 1. I hope it help you ✌️✌️.