Answer:
= cos x / sin x
= cot x
Using the formula,
sinA + sinB = 2sin (A+B)/2 . cos (A-B)/2
cosA – cosB = -2sin (A+B)/2 . sin (A-B)/2
Answer:
= cos x / sin x
= cot x
Using the formula,
sinA + sinB = 2sin (A+B)/2 . cos (A-B)/2
cosA – cosB = -2sin (A+B)/2 . sin (A-B)/2