การดู
Find the Six Trig Function Values of Theta if cos(theta) = -3/5 and Theta is in Quadrant 3
Derive an identity for cos(2theta), done fast in 56 seconds
(Cosec Theta-Cot Theta)2=1-Cos Theta/1+Cos Theta | (Cosec-Cot)2=1-Cos/1+Cos
cos(theta) in terms of complex exponentials
The mod-amp form of `1+cos theta+i sin theta` is
( 1/1+cos theta ) + (1/1-cos theta)=2 cosec^2 theta
if cos theta =a/b then find the value of Cosec theta.
trigonometry prove that :- (sinθ-cosθ+1 )/(sinθ+cosθ-1 )=secθ+tanθ