Review of trigonometry Points on the Unit Circle

The video tutorial covers the basics of angles, including initial and terminal sides, and their representation on the X&Y axis. It introduces the unit circle and explains radian measurement, highlighting the relationship between radians and π. The tutorial explores special right triangles to find coordinates on the unit circle and delves into trigonometric functions like sine, cosine, and tangent. It concludes with a discussion on reciprocal identities, including cosecant, secant, and cotangent.

What is the terminal side of an angle?

• The side where the angle ends

• The side that is always vertical

• The side where the angle starts

• The side that is always horizontal

How is a positive angle determined on the X&Y axis?

• By rotating horizontally

• By rotating vertically

• By rotating counterclockwise

• By rotating clockwise

What is a radian?

• A measure of angle based on the diameter

• A measure of angle based on the radius

• A measure of time

• A measure of distance

How many radians are in a full circle?

• 2π radians

• 4π radians

• 3π radians

• π radians

What does π/3 represent in terms of angle measurement?

• One-third of π

• One-third of a radian

• One-third of a degree

• One-third of a circle

Which point is not a basic point on the unit circle?

• (0, 1)

• (1, 1)

• (-1, 0)

• (1, 0)

What is the sine of an angle on the unit circle?

• The hypotenuse

• The Y-coordinate

• The radius

• The X-coordinate

How is the tangent of an angle on the unit circle calculated?

• Y/X

• X+Y

• X*Y

• X/Y

What is the cosecant of an angle?

• 1/X

• X/Y

• 1/Y

• Y/X

What is the reciprocal of the cosine function?

• Cotangent

• Tangent

• Cosecant

• Secant