Math, asked by travelagency381, 10 months ago

Plz answer ......it's very urgent

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Answers

Answered by rishi1608bhatele

2

Answer:

answer is (A). cot A+B/2

Answered by pranjaygupta

1

Answer:

(a)

Step-by-step explanation:

sinA-sinB = 2cos((A+B)/2)sin((A-B)/2)

cosB-cosA = 2sin((A+B)/2)sin((A-B)/2)

divide

cot((A+B)/2)

hope it helps u

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