Math, asked by bawaprabh4846, 11 months ago

If p q r are interior angles of triangle pqr then find tan p + q by 2

Answers

Answered by sharmahoney2964
0

Answer:

p+q+r=180°

p+q=180-r

(p+q)/2=(180-r)/2=90-r/2

so

tan(p+q)/2=tan(90-r/2)

=cot r/2 Ans

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