Trigonometry

Front

What is the COSINE ratio of any angle in a right triangle?

Back

The cosine ratio of an angle in a right triangle is defined as the length of the adjacent side divided by the length of the hypotenuse.

Front

Find the length of side w if sin 40 = w/28.

Back

w = 28 * sin(40) = 18.0 cm.

Front

If cos B = 5/13, what is the length of the adjacent side if the hypotenuse is 13?

Back

The length of the adjacent side is 5.

Front

Solve for the missing angle if sin A = 0.6.

Back

A = sin^(-1)(0.6) = 36.9 degrees.

Front

What is the correct equation to solve for side w if sin 40 = w/28?

Back

The correct equation is sin 40 = w/28.

Front

What is the definition of the sine ratio in a right triangle?

Back

The sine ratio is defined as the length of the opposite side divided by the length of the hypotenuse.

Front

What is the tangent ratio of an angle in a right triangle?

Back

The tangent ratio is defined as the length of the opposite side divided by the length of the adjacent side.

Front

If tan B = 3/4, what is the opposite side if the adjacent side is 4?

Back

The opposite side is 3.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a^2 + b^2 = c^2, where c is the hypotenuse.

Front

How do you find the hypotenuse if one side is 5 and the other side is 12?

Back

c = √(5^2 + 12^2) = 13.