Solve the trigonometric equation : `cos theta - sin theta = -1`

Solve the trigonometric equation: cos5 theta=-(1)/(2)

Solve the trigonometric equation: 3cos^(2)theta+7sin^(2)theta=4

Solve the trigonometric equation : sin2 theta=(1)/(2)

Solve the following trigonometric equation: cos5 theta=0

Solve the following trigonometric equation: tan3 theta=-1

Solve the following trigonometric equation: sin^(3)3 theta=0

Solve the equation sin9 theta=sin theta

Solve the following equation: cos^(2)theta-sin theta cos theta-(1)/(2)=0

Solve the following trigonometric equations: sin(theta)/(2)=-1 (ii) cos(3 theta)/(2)=(1)/(2) (iii) tan((2)/(3)theta)=sqrt(3)

Solve the following trigonometric equation: tan theta=(1)/(sqrt(3))