Question

if A,B,C are the acute angles such that sin B+C/2=cos B/2

Answer 1

Answer:

Step-by-step explanation: Complete the question.

Answer 2

First of all -
Some correction in the question.

The correct question will be :-
$\sin( \frac{b + c}{2}) = \cos( \frac{a}{2})$

So,

Please refer the above photograph for the used process.
Hope this will be helping you.


KEY POINTS TO REMEMBER :-


☸️ sin(90-x) = cos x

☸️Angle sum property of a triangle is 180 degrees.

☸️sin = perpendicular /Hypotenuse

☸️ cos = base/Hypotenuse


Thanks!