Math, asked by niveditha07, 8 months ago

A,B,C are interior angles of triangle ABC. Then prove:
cos B+C/2× cos C+A/2× cos A+B/2 ÷ sin A/2× sinB/2× sinC/2=1

Answers

Answered by kruti05

1

Answer:

sorry don't know

Step-by-step explanation:

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