Math, asked by nishusingh0906, 1 year ago

sin 40° - cos 70º = v3.cos 80°

Answers

Answered by sprao534

6

Please see the attachment

Attachments:

nishusingh0906: how to write a cos70 as sin20

sprao534: cos( 90-A)=sinA then cos 70=cos(90-20)=sin20

nishusingh0906: thanks

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