Evalute your trig functions of a triangle

The video tutorial covers the basics of angles, focusing on the unit circle and central angles. It explains trigonometric functions using the SOHCAHTOA method and extends these concepts beyond the unit circle. The tutorial introduces reciprocal identities and demonstrates solving a trigonometric problem using the Pythagorean theorem.

What is the significance of the central angle in the unit circle?

• It is used to evaluate sine and cosine.

• It is irrelevant to trigonometric functions.

• It helps in determining the radius of the circle.

• It defines the circumference of the circle.

How is the sine of an angle in the unit circle calculated?

• By subtracting the x-coordinate from the y-coordinate.

• By dividing the x-coordinate by the radius.

• By dividing the y-coordinate by the radius.

• By multiplying the x and y coordinates.

Which side of a triangle is opposite to the angle Theta?

• The side forming the right angle.

• The side directly across from the angle.

• The hypotenuse.

• The side adjacent to the angle.

What is the formula for the tangent of an angle?

• Adjacent over hypotenuse

• Opposite over hypotenuse

• Adjacent over opposite

• Opposite over adjacent

What is the reciprocal of the sine function?

• Cosine

• Cotangent

• Cosecant

• Secant

If the opposite side is 12 and the adjacent side is 5, what is the hypotenuse?

• 13

• 10

• 17

• 15

How do you calculate the secant of an angle?

• Hypotenuse over opposite

• Hypotenuse over adjacent

• Adjacent over opposite

• Opposite over hypotenuse