Section 9.1 Verifying Trigonometric Identities Video Quiz

What happens to an even function like cosine when it is squared?

• It becomes neither even nor odd.

• It remains even.

• It becomes odd.

• It becomes undefined.

Why is the secant function undefined at certain points?

• Because cotangent is zero at those points.

• Because cosine is zero at those points.

• Because tangent is zero at those points.

• Because sine is zero at those points.

What is the simplified form of sine(x) * cosine(x) * secant(x)?

• cosine(x)

• sine(x)

• tangent(x)

• cotangent(x)

What is the result of simplifying (sine^2(x) + cosine^2(x)) / cosine(x)?

• cosecant(x)

• cotangent(x)

• tangent(x)

• secant(x)

What is the simplified form of cotangent(x) + tangent(x) over secant(-t)?

• secant(x)

• sine(x)

• cosine(x)

• cosecant(x)

What is the simplified form of 1 - cosine^2(x) / tangent^2(x)?

• cosine^2(x)

• sine^2(x)

• tangent^2(x)

• cotangent^2(x)

What is the simplified form of secant^2(theta) / cosecant^2(theta)?

• cotangent^2(theta)

• cosecant^2(theta)

• secant^2(theta)

• tangent^2(theta)

What is the simplified form of 1 - sine^2(x) / cosine^2(x)?

• cotangent(x)

• tangent(x)

• cosine(x)

• sine(x)

What is the simplified form of secant(x) in terms of cotangent(x)?

• cotangent(x)

• 1 / cotangent(x)

• sqrt(1 - cotangent^2(x))

• sqrt(1 + cotangent^2(x))

What is the simplified form of cotangent(x) in terms of sine(x)?

• 1 / sine(x)

• sqrt(1 + sine^2(x)) / sine(x)

• sqrt(1 - sine^2(x)) / sine(x)

• sine(x)