Trig Identities

What is sin^2(25) + cos^2(25)?

Express 1 - cos^2(theta) in terms of sine.

Simplify (sec(A) / tan(A)).

What is the value of tan(theta) * cot(theta) + 1?

The expression (1/cos^2(x)) - (1/cot^2(x)) simplifies to:

Value of sin(0) * cos(90) is:

If tan(A) = 1, then A is:

The identity cos^2(theta) = 1 - ...?

What is the value of cosec(30)?

Simplify cos(A) * sec(A).

If sin(A) = cos(A), find the value of tan(A).

What is (1 - cos^2(A)) / sin(A)?

The reciprocal of cos(theta) is:

What is sin(A) / tan(A)?

Calculate the value of sin(45) * cos(45).

The expression (1 + tan^2(A))(1 - sin^2(A)) is equal to:

Simplify: sin(2A) / (2 sin A)

What is cos(2A) in terms of cos A?

Find the value of tan(60) * cot(30).

Simplify (1 + cot^2 A) sin^2 A.