Question Bank

Simplify: √ (sec² θ - 1).

Using compound angle formulas, sin(A + B) is equal to:

Express cos 2A in terms of sin A.

What is the value of sin 2θ if sin θ = 3/5 and cos θ = 4/5?

Simplify: (sin A + cos A)² - 2 sin A cos A.

The formula for tan(A - B) is:

If tan A = 1/2 and tan B = 1/3, what is the value of tan(A + B)?

Value of cos 75° using compound angle formula is:

Simplify: 2 cos² θ - 1.

What is 2 sin 15° cos 15°?

Simplify the expression: (1 - cos 2A) / sin 2A.

The value of sin 15° is:

What is the formula for cos(A - B)?

Express tan 2A in terms of tan A.

Simplify: sin(45° + θ) - cos(45° - θ).

Find the value of tan 75°.

If sin A = 1/2, then the value of sin 3A is:

What is the value of 1 + tan² A?

Simplify: (cos A - sin A)(cos A + sin A).

Which formula represents cos 3A?