Trig Semester Review

Front

What is the definition of a coterminal angle?

Back

Coterminal angles are angles that share the same terminal side when drawn in standard position. They can be found by adding or subtracting multiples of 360°.

Front

How do you find the sine of an angle in a right triangle?

Back

The sine of an angle is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the Pythagorean identity involving sine and cosine?

Back

sin²(θ) + cos²(θ) = 1.

Front

What is the definition of cosecant (csc)?

Back

Cosecant is the reciprocal of sine: csc(θ) = 1/sin(θ).

Front

How do you convert degrees to radians?

Back

To convert degrees to radians, multiply by π/180.

Front

What is the value of sin(90°)?

Back

sin(90°) = 1.

Front

What is the relationship between the angles in a right triangle?

Back

The sum of the angles in a right triangle is always 180°, with one angle being 90°.

Front

What is the definition of tangent (tan)?

Back

Tangent is the ratio of the opposite side to the adjacent side: tan(θ) = opposite/adjacent.

Front

How do you find the angle using the inverse sine function?

Back

To find the angle, use θ = sin⁻¹(opposite/hypotenuse).

Front

What is the value of cos(0°)?

Back

cos(0°) = 1.