Trigonometry Question Quiz

Determine the value of \cos 36\degree

Determine the value of \sin 18\degree

Verify the identity \cos 3\alpha =4\cos^3\alpha -3\cos \alpha

Simplify: \sin 50° (1+\sqrt{3}\tan 10° )

Verify the identity \sin 3\alpha =3\sin \alpha -4\sin^3\alpha

If \sin \theta \geq \dfrac{\sqrt{3} }{2}, determine the domain of \theta in a unit circle

Determine the values of x such that 2 \sin x + \cos^2x = 2:

\sin^2 120°\cosec 270° – \cos^2 315°\sec 180° – \tan^2 225°\cot 315° =