Right Triangle Trigonometry Essentials

The measurement of circles

The measurement of squares

The measurement of triangles

The measurement of rectangles

a^2 * b^2 = c^2

a^2 + b^2 = 2c

a^2 - b^2 = c^2

a^2 + b^2 = c^2

A set of three angles adding up to 180 degrees

A set of three numbers satisfying a^2 + b^2 = c^2

A set of three prime numbers

A set of three equal sides in a triangle

If c^2 > a^2 + b^2

If c^2 = a^2 + b^2

If c^2 < a^2 + b^2

None of the above

√3/2

1/2

√2

1/√2

Adjacent over Hypotenuse

Opposite over Adjacent

Opposite over Hypotenuse

Hypotenuse over Opposite

Using the Pythagorean theorem

Using the cosine function

Using the sine function

All of the above

To solve for missing angles in a triangle

To determine if a triangle is right-angled

To calculate the area of a triangle

To find the length of sides in a triangle

The sides of a triangle to its angles

The angles of a triangle to its perimeter

The sides of a triangle to its area

The height of a triangle to its base

When all three sides of a triangle are known

In right triangles only

When two sides and the included angle are known

Both B and C