Math, asked by anmolpreet587, 7 months ago

What is the value of cos(A+B) -cos C if, A+B+C=Pie

Answers

Answered by gaggunarula786

0

A+B+C=π

A+B=π-C

FROM GIVEN EQUATION

COS(π-C)-COSC

==.> -COSC-COSC

>>>>>>=. -2COS2C ans

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