# 6.2: Trigonometric Functions

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Function Result

acos(x)

Inverse cosine; arcos x = cos –1 (x).

acot(x)

Inverse cotangent; arccot x = cot –1(x).

acsc(x)

Inverse cosecant; arcs x = csc –1 (x).

asec(x)

Inverse secant; arcsec x = sec –1 (x).

asin(x)

Inverse sine; arcsin x = sin –1 (x).

atan(x)

Inverse tangent; arctan x = tan –1 (x).

atan2(y,x)

cos(x)

Cosine; cos(x).

cot(x)

Cotangent; cot(x).

csc(x)

Cosecant; csc(x).

sec(x)

Secant; sec(x).

sin(x)

Sine; sin(x).

tan(x)

Tangent; tan(x).

6.2: Trigonometric Functions is shared under a CC BY 1.3 license and was authored, remixed, and/or curated by Brian Vick, Virginia Tech.