Trig Ratios

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.

Find the value of (sec A + tan A)(1 - sin A).

The value of cot 10 * cot 80 is:

What is the maximum value of 1/cosec theta?

If x = a cos theta and y = b sin theta, then b^2 x^2 + a^2 y^2 is equal to:

Which of the following is equal to cos 90 degrees?

If 3 cot A = 4, then sin A is:

The value of (sin 30 + cos 30) - (sin 60 + cos 60) is:

Evaluate: tan 1 * tan 2 * tan 3 ... tan 89

If cos A = 4/5, find the value of tan A.

Find the value of 2 tan 30 / (1 + tan^2 30).