Question

If A, B and C are interior angles of a triangle ABC, then show that sin [(B + C)/2] = cos A/2.

To tu kha rahi hai...

Warna mere jaiso se koi behes nahi krta

kutta hu na kisi ke pas time nahi hai itna faltu... ​

Answer 1

Answer:

kuch samjhe nhi pr padh ke accha laga

BGMI download kiya kya tune bio main baat kare

Answer 2

Answer:

sin(45+45) /2=cos90/2

Step-by-step explanation:

according to question:

A, B, C are interior angle of a triangle

then, A+B+C=180