prove that
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Answer:
sin 2 A+cos 2 A=1
LHS=sin 2 A+cos 2 A
=( hypotenuse opposite ) 2 +( hypotenuse adjacent )=2
= AC 2* BC2 + AC2 *AB2
= AC 2 BC 2 +AB 2
= AC 2 * AC 2 [By pythagoras theorem] =1 =RHS
:. sin 2 A+cos 2 A=1
HOPE THIS HELPS
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