Unit 4 - Solving Trigonometric Equations (Review) - Pre-Calc

Front

What is the value of x if cos(x) = 1?

Back

x = 0°.

Front

Solve for x: 4cos(x) + 3 = 5 for 0 ≤ x < 360°.

Back

x = 60°, 300°.

Front

Solve the equation: 2sin²(x) - 5sin(x) + 2 = 0.

Back

x = 30°, 150°.

Front

What is the range of the sine function?

Back

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

Front

What is the range of the cosine function?

Back

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

Front

What is the period of the sine function?

Back

The period of the sine function is 360° (or 2π radians).

Front

What is the period of the cosine function?

Back

The period of the cosine function is 360° (or 2π radians).

Front

What is the Pythagorean identity for sine and cosine?

Back

sin²(x) + cos²(x) = 1.

Front

What is the value of sin(90°)?

Back

sin(90°) = 1.

Front

What is the value of cos(0°)?

Back

cos(0°) = 1.