Examples for

# Step-by-Step Trigonometry

Use Wolfram|Alpha to get information about trigonometry problems, from solving for missing measurements of triangles to evaluating trigonometric functions to manipulating trigonometric expressions. See step-by-step solutions for using trigonometric ratios like sine, cosine and tangent to compute the measurements of sides and angles of triangles. Learn how to find values of additional trigonometric functions, including secant, cosecant and cotangent. Get explanations for how to algebraically manipulate expressions involving trigonometric functions, including to prove and apply identities such as the Pythagorean identity, the negative-angle identity, and the sum and difference identities.

### Right Angle Trigonometry

Use trigonometric ratios to compute measurements of right triangles.

#### Learn how to find the side lengths of a right triangle using the Pythagorean theorem:

#### Show your work for solving the unknown measurements of a triangle:

### Trigonometric Expressions

Solve and manipulate expressions involving trigonometric functions.

#### Explore the steps for solving trigonometric equations:

#### Expand trigonometric expressions with the steps provided:

#### Perform double angle reductions:

#### Show the steps to expand expressions using the triple angle formulas:

### Trigonometric Functions

Evaluate sine, cosine, tangent, secant, cosecant and cotangent functions.

#### See the steps for how to find the values of a trigonometric function:

### Trigonometric Identities

Prove and reason with trigonometric identities.