Advanced Math Tool

Trigonometry Calculator

Calculate sine, cosine, tangent, reciprocal trig functions, inverse trig values, and right triangle measurements with a clean professional calculator.

Fast & Accurate Results

Works with degrees, radians, inverse functions, and right triangle formulas.

Trig Function Calculator

Find sin, cos, tan, cot, sec, csc, asin, acos, and atan.

Angle or Ratio

Result Unit

Choose Function

For normal functions, enter an angle. For inverse functions, enter a ratio.

Right Triangle Solver

Enter any two known values to solve a right triangle.

Opposite Side a

Adjacent Side b

Hypotenuse c

Angle A

Best examples: enter a + b, a + c, b + c, c + angle, a + angle, or b + angle.

What Is a Trigonometry Calculator?

A trigonometry calculator is a math tool that helps you solve angle-based functions and right triangle values. It is useful for students, teachers, engineers, designers, builders, and anyone working with angles, slopes, waves, distances, or geometry problems.

Function Results Quickly calculate sine, cosine, tangent, secant, cosecant, and cotangent.

Inverse Trig Use asin, acos, and atan to convert ratios back into angles.

Triangle Solver Solve missing right triangle sides, angles, area, and perimeter.

How This Trigonometry Calculator Works

Enter your angle or ratio

For sin, cos, tan, sec, csc, and cot, enter an angle. For inverse functions, enter a ratio value such as 0.5.

Select the function

Choose the trigonometric function you want to calculate. You can switch between degrees and radians depending on your math problem.

Review the complete result

The tool shows the main answer plus related trig values, making it easier to compare formulas and verify your work.

Common Trigonometry Formulas

These are the most used formulas behind this calculator:

sin θ = opposite / hypotenuse

cos θ = adjacent / hypotenuse

tan θ = opposite / adjacent

csc θ = 1 / sin θ

sec θ = 1 / cos θ

cot θ = 1 / tan θ

a² + b² = c²

Area = ½ × a × b

A + B = 90°

FAQs

What is the best use of a trigonometry calculator?

It is best used for solving angle functions, checking homework answers, calculating right triangle values, and converting between ratios and angles.

Can I use this calculator for degrees and radians?

Yes. The calculator supports both degrees and radians, so you can use it for school, engineering, construction, and advanced math problems.

Why is tan 90° undefined?

Tangent is calculated as sin divided by cos. At 90 degrees, cosine is zero, and division by zero is undefined.

What values can I enter for inverse sine and inverse cosine?

For asin and acos, the input ratio must be between -1 and 1. This is because sine and cosine ratios cannot be outside that range.

Can this solve a right triangle?

Yes. Enter any two known values such as two sides, one side with hypotenuse, or one side with an angle to calculate the missing triangle values.