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if sinθ²+cos θ²=1 prove the equation without putting values

if sinθ²+cos θ²=1
prove the equation without putting values

Grade:8

2 Answers

Arun
25750 Points
4 years ago

According to the Pythagorean theorem,

 

x2 + y2 = r2.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .(1)

Therefore, on dividing both sides by r2,

x2
r2
  +   y2
r2
  =   r2
r2
  =  1.

That is, according to the definitions,

cos2θ  +  sin2θ  =  1.  .  .  .  .  .  .  .  .  .  .  .  .  .(2)

Vikas TU
14149 Points
4 years ago
Dear student 
For more information please refer the following link 
Good Luck 

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