what is the value of sin 180 + theta
Answers
Answered by
2
We know that,
sin (90° + θ) = cos θ
cos (90° + θ) = - sin θ
sin (180° + θ) = sin (90° + 90° + θ)
= sin [90° + (90° + θ)]
= cos (90° + θ), [since sin (90° + θ) = cos θ]
Therefore, sin (180° + θ) = - sin θ, [since cos (90° + θ) = - sin θ]
sin (90° + θ) = cos θ
cos (90° + θ) = - sin θ
sin (180° + θ) = sin (90° + 90° + θ)
= sin [90° + (90° + θ)]
= cos (90° + θ), [since sin (90° + θ) = cos θ]
Therefore, sin (180° + θ) = - sin θ, [since cos (90° + θ) = - sin θ]
throwathigh:
was that brainly?
got it?
yaa
ok..
can u follow me
no i am not interested
U smell good...Dont spoil it.
sorry but i dont want to follow anyone
its just a matter of time..otherwise let see..
Similar questions