Inverse Trig and Exact Value(flashcard 4)deg

Front

Where is tangent undefined?

Back

Tangent is undefined at 90° and 270°.

Front

What is cos⁻¹(-½)?

Back

cos⁻¹(-½) = 120° and 240°.

Front

Evaluate csc⁻¹(2)

Back

csc⁻¹(2) = 30°.

Front

What is arcsin(1/√2)?

Back

arcsin(1/√2) = 45° and 135°.

Front

cot(315°) = ?

Back

cot(315°) = -1.

Front

What is the range of arcsin(x)?

Back

The range of arcsin(x) is [-90°, 90°].

Front

What is the range of arccos(x)?

Back

The range of arccos(x) is [0°, 180°].

Front

What is the range of arctan(x)?

Back

The range of arctan(x) is (-90°, 90°).

Front

What is the relationship between sin and csc?

Back

csc(x) = 1/sin(x).

Front

What is the relationship between cos and sec?

Back

sec(x) = 1/cos(x).