Lecture #18 (Exam #3 Review) - Fall 2024

Front

If tan > 0 and cos < 0, what quadrant are you in?

Back

You are in Quadrant 3.

Front

Convert 225° to radians.

Back

Front

What is the complement of 10°?

Back

The complement of 10° is 80°.

Front

Evaluate: sin^{-1}(-\frac{\sqrt{2}}{2})

Back

sin^{-1}(-\frac{\sqrt{2}}{2}) = -\frac{\pi}{4}.

Front

What is the range of the sine function?

Back

The range of the sine function is [-1, 1].

Front

What is the Pythagorean identity?

Back

Front

How do you find the reference angle for an angle in the third quadrant?

Back

Subtract 180° from the angle.

Front

What is the value of cos(180°)?

Back

cos(180°) = -1.

Front

What is the formula for converting degrees to radians?

Back

Front

What is the sine of 90°?

Back

sin(90°) = 1.