Question

Cos A into Cos C minus sin a into sin c​

Answer 1

hope it will help you:-)

Answer 2

Answer:

Step-by-step explanation:

2 sin A cos B = sin (A +B) +sin (A -B)

2 cos A sin B = sin (A +B) -sin (A -B)

2 cos A cos B = cos (A +B) +cos (A -B)

2 sin A sin B = cos (A -B) -cos (A +B)