Exploring Even and Odd Trig Identities

What is the x-coordinate on the unit circle known as?

• Cosine

• Cotangent

• Sine

• Tangent

If the sine of 30° is 1/2, what is the sine of -30°?

• 0

• -1/2

• -1

• 1/2

Which trigonometric function is considered odd?

• Secant

• Cosine

• None of the above

• Sine

What is the cosine of -30° if the cosine of 30° is √3/2?

• -√3/2

• √3/2

• 0

• -1

Which of the following is an even function?

• Cosine

• Cotangent

• Tangent

• Sine

What is the reciprocal of cosine?

• Tangent

• Secant

• Cotangent

• Sine

Which trigonometric functions are even?

• Sine and Cosine

• Sine and Tangent

• Cosine and Secant

• Tangent and Cotangent

What happens to the value of an odd function when the angle is negated?

• It changes sign

• It doubles

• It becomes zero

• It remains the same

What is the result of dividing sine by cosine?

• Cotangent

• Cosecant

• Tangent

• Secant

What is the simplified form of cotangent of a negative angle?

• Sine of the positive angle

• Negative cotangent of the positive angle

• Negative sine of the positive angle

• Cotangent of the positive angle