Understanding Trigonometric Functions at Zero Degrees

The video tutorial explains how to find the exact trigonometric function values at zero radians or degrees using the unit circle. It covers sine, cosine, tangent, cotangent, secant, and cosecant, highlighting that sine and tangent are zero, cosine and secant are one, and cotangent and cosecant are undefined due to division by zero.

What is the significance of the point (1, 0) on the unit circle for zero degrees?

• It is the point where the circle intersects the y-axis.

• It is the midpoint of the unit circle.

• It is the point where the tangent line touches the circle.

• It represents the sine and cosine values at zero degrees.

What is the value of sine at zero degrees?

• -1

• Undefined

• 0

• 1

What is the value of cosine at zero degrees?

• 0

• 1

• Undefined

• -1

How is the tangent of zero degrees calculated?

• X divided by Y

• X multiplied by Y

• Y minus X

• Y divided by X

Why is cotangent at zero degrees considered undefined?

• Because it is a negative value.

• Because it involves division by zero.

• Because it is equal to one.

• Because it is equal to zero.

What is the value of secant at zero degrees?

• 0

• -1

• 1

• Undefined

Why is cosecant at zero degrees considered undefined?

• Because it involves division by zero.

• Because it is equal to one.

• Because it is equal to zero.

• Because it is a negative value.

Which trigonometric function at zero degrees is equal to the reciprocal of cosine?

• Tangent

• Cosecant

• Secant

• Sine