Trigonometry

What is the square of sin 45 degrees?

If tan A = 3/4, find cot A.

The minimum value of cos theta for theta between 0 and 90 degrees inclusive is:

Which of these is not a valid trigonometric ratio?

In a right triangle, the side opposite to 90 degrees is called:

What is the value of sin 0 * cos 0?

What is 1 / sec theta?

Evaluate: sin^2 30 + cos^2 30

What is the ratio of perpendicular to base?

If sin theta = 1/2, what is theta?

Which of these ratios is undefined at 90 degrees?

What is the value of (cos 45)^2?

Which trigonometric ratio is the reciprocal of cosine?

If sin theta = 3/5, what is the value of cos theta?

Find the value of tan theta if cos theta = 12/13.

What is the value of sin 60 * cos 30 + cos 60 * sin 30?

Simplify: (sec^2 theta - 1) / tan^2 theta

If 5 tan A = 4, evaluate (5 sin A - 3 cos A) / (5 sin A + 2 cos A).

Evaluate: 2 sin^2 30 + 3 cos^2 30

If cosec A = 2, find the value of cot A + sin A / (1 + cos A).