What are inverse trig functions?

arcsin, arccos, and arctan are the inverses of sin, cos, tan; they return an angle (usually in radians) for a given ratio.

What is the domain of arcsin and arccos?

Both take inputs in [-1, 1]. arcsin outputs [-π/2, π/2]; arccos outputs [0, π].

All real numbers. Output is in (-π/2, π/2).

Explore inverse trig functions (arcsin, arccos, arctan): domain, range, and value at a number.

Input x (for arcsin/arccos use -1 to 1)

Result

arcsin(x): 0.5236 rad (30.00°)

arccos(x): 1.0472 rad (60.00°)

arctan(x): 0.4636 rad (26.57°)

Graphs: arcsin and arccos have domain [-1,1]; arctan has domain ℝ. Outputs in radians.

What are inverse trig functions?: arcsin, arccos, and arctan are the inverses of sin, cos, tan; they return an angle (usually in radians) for a given ratio.
What is the domain of arcsin and arccos?: Both take inputs in [-1, 1]. arcsin outputs [-π/2, π/2]; arccos outputs [0, π].
What is the domain of arctan?: All real numbers. Output is in (-π/2, π/2).

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