Question Bank

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).

What is the value of tan 30 / cot 60?

In a triangle right-angled at B, AB = 24 cm, BC = 7 cm. Find sin A.

If sec theta = 5/4, find tan theta.

Evaluate (1 - tan^2 45) / (1 + tan^2 45).

If sin A = cos A, what is the value of A in degrees (0 < A < 90)?

Calculate: sin 45 * cos 45 - sin 30 * cos 30

If tan theta + cot theta = 2, find tan^2 theta + cot^2 theta.

Simplify: sin A / (1 + cos A) + (1 + cos A) / sin A

What is the value of sin 180 degrees?

If sin (A - B) = 1/2 and cos (A + B) = 1/2, find A and B.