Math, asked by chhatikchhatik, 7 months ago

Sin (120 +A) - Sin(120 - A) + SinA=0

Answers

Answered by rupamdutta1971

0

sin (120+A)-sin(120-A)+sin A

=sin120cosA+cos120sinA-sin120cosA+cos120sinA+sinA

=2cos120sinA+sinA

=2(-1/2)sinA+sinA

=0

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