Right Triangle Trigonometry Test

Pythagorean Theorem can be used to find the missing side length of any triangle.

The triangle with side lengths 8m, 8m, and 12m is acute.

sinA = cosB (Use the image to the right.)

cosA= cosB (Use the image to the right.)

What is the mnemonic we use to remember trigonometric ratios and what does each letter stand for?

Solve for x, rounding to the nearest tenth. 10.4 yd X 10.1 yd a. Acute b. Right 38°

• Acute

• Right

A rope from the top of a mast on a sailboat is attached to a point 19 feet from the mast. If the rope is 28 feet long, how tall is the mast? Round to the nearest tenth of a foot.

Classify the triangle with the given sides as acute, right, obtuse, or not a triangle: b. Right d. Not a triangle

• Acute

• Right

• Obtuse

• Not a triangle

For 10-12, find the sine, cosine, and tangent of angle A. Give your answer as a fraction in simplest form. (You should not use variables.) B 15. A a. Acute 24 16 74°

• 39.0

• 41.8

• 3.4

• 49.9

For 13-22, find the value of the unknown side or angle.