Question

what is costheta and sintheta​

Answer 1

Sine and cosine — a.k.a., sin(θ) and cos(θ) — are functions revealing the shape of a right triangle. Looking out from a vertex with angle θ, sin(θ) is the ratio of the opposite side to the hypotenuse , while cos(θ) is the ratio of the adjacent side to the hypotenuse

Answer 2

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What is cos theta and sin theta​?

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Sine and cosine — a.k.a., sin(θ) and cos(θ) — are functions revealing the shape of a right triangle. Looking out from a vertex with angle θ, sin(θ) is the ratio of the opposite side to the hypotenuse , while cos(θ) is the ratio of the adjacent side to the hypotenuse.

Sine and cosine function always lies between -1 and 1.

For sin x = 1 ; x is value in angle or radian. Or sin x= -1 ; for x value is equal to + 270 or - 270 degree. The value of sin thetha ranges from 0 to 1, so it can't be more than one.

Cofunction Identities, degrees

✴sin (90° – x) = cos x
cos (90° – x) = sin x


✴tan (90° – x) = cot x cot (90° – x) = tan x


✴sec (90° – x) = csc x csc (90° – x) = sec x

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