In a right triangle, the following trigonometric ratios can be defined:

Sine

The sine of the angle B is the ratio between the length of the opposite side and the hypotenuse of the triangle.

It is denoted by sin B.

Cosine

The cosine of the angle B is the ratio between the length of the adjacent side and the hypotenuse of the triangle.

It is denoted by cos B.

Tangent

The tangent of the angle B is the ratio between the length of the opposite side and the adjacent side of the triangle.

It is denoted by tan B.

Cosecant

The cosecant of angle B is the inverse of the sine of B.

It is denoted by csc B.

Secant

The secant of angle B is the inverse of the cosine of B.

It is denoted by sec B.

Cotangent

The cotangent of the angle B is the inverse of the tangent of B.

It is denoted by cot B.

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Emma

I am passionate about travelling and currently live and work in Paris. I like to spend my time reading, gardening, running, learning languages and exploring new places.

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