Math, asked by koteaditya297, 1 day ago

prove that
  { \sin }^{2}  \alpha  +  { \cos}^{2}  \alpha  = 1
ans this​

Answers

Answered by guhanashish
0

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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