Unit 4b Test Review

Front

What equation can be used to solve for x in a right triangle with an angle of 40°?

Back

Sin(40º) = x/19

Front

What is the ratio for SIN X in a right triangle?

Back

Opp/Hyp

Front

What should you do if you are given 2 sides of an obtuse triangle?

Back

You can only use trig functions on right triangles.

Front

How do you solve for the missing angle in a triangle if you have the other angles?

Back

Add the known angles and subtract from 180°.

Front

If you are given the hypotenuse and an adjacent side, which trig function should you use?

Back

Cosine

Front

What is the definition of cosine in a right triangle?

Back

Adjacent side over Hypotenuse.

Front

What is the definition of sine in a right triangle?

Back

Opposite side over Hypotenuse.

Front

What is the definition of tangent in a right triangle?

Back

Opposite side over Adjacent side.

Front

If Sin(θ) = 0.5, what is θ?

Back

θ = 30° or θ = 150°.

Front

What is the Pythagorean theorem?

Back

a² + b² = c², where c is the hypotenuse.