# Trigonometry Topics

Acute Angle
A positive angle that is less than 90 degrees.
Angles
The inclination of one line to another.
Cosecant
Trigonometric function.
Cosine
Trigonometric function.
Cotangent
Trigonometric function.
Degree
A unit describing a plane angle, 1 degree = 1/90 right angle.
Hyperbolic Sine
Hyperbolic sine of x.
The radian is the plane angle between two radii of a circle which cut off on the circumference an arc equal in length to the radius.
Secant
Trigonometric function.
Sinc Function
The function sin of x divided by x.
Sine
Trigonometrical function.
Spherical Trigonometry
The branch of mathematics dealing with measurements on the sphere.
The steradian is the solid angle, having its vertex in the centre of a sphere, cuts off an area of the surface of the sphere equal to that of a square with sides of equal length to the radius of the sphere.
Tangent
Trigonometric function.
Trigonometric
The basic Sum and Difference equations along with other trigonometric functions.
Trigonometric Functions
These are functions of an angle. They relate the angles of a triangle to the lengths of its sides.
Trigonometry Books
Lists all Trigonometry Books in the Encyclopaedia
Trigonometry Calculations
Lists all Trigonometry Calculations in the Encyclopaedia
Trigonometry Conversions
Lists all Trigonometry Conversions in the Encyclopaedia