Math, asked by aparajitabiswas, 9 months ago

∆ABC sin(A-B)/sin(A+B)

Answers

Answered by Ïmpøstër

0

Step-by-step explanation:

A+B+C= 180°

A+B=180- C

sin (A+B) = sin(180 - C)

..........( multiplying both side by sin)

sin(A+B)= cos(C).....

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