Math, asked by Anhik03, 11 months ago

sin [40-a] - cos[50+a]=....................

Answers

Answered by TanmayKiranUrunkar

1

Answer:

we have sinx=cos(90-x)

sin(40-a)=cos (90-40+a)=cos (50+a)

sin(40-a)-cos (50+a)=cos(50+a)-cos(50+a)=0

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