Find the Missing Length and Angle Measures Using Trigonometry

Which is the correct ratio you would use to solve for "x"?

• sin 28 = x/14

• cos 28 = x/14

• tan 28 = x/14

• tan 28 = 14/x

Choose the correct ratio you could use to solve for "x".

• sin(37)=x/14

• cos(37)=x/14

• tan(37)=x/14

• sin(37)=14/x

Find the length of side AB.

• 20 m

• 5 m

• 11.54 m

• 8.66 m

Use the Trig Toolkit to find the missing side length, y. Choose your answer from the dropdown menu below.

ANSWER: ​ (a)  

• y = 20

• y = 70

• y = 50

To find a missing angle when given two sides of a right triangle, you must use ______ 

• Trigonometric Functions 

• Trigonometric Rations 

• Inverse Trigonometric Functions

• Pythagorean Theorem

Which of the following would you use to find the measure of an angle?

• Pythagorean theorem

• Sin, Cos, or Tan

• Sin^-1, Cos^-1, or Tan^-1

•  Theorem

If you know the opposite and adjacent sides to the missing angle, What Trig function would you use?

• sine

• cosine

• tangent

• cosine

In a right triangle, if the lengths of the two legs are 8 units and 15 units, what is the measure of the angle opposite the side that is 8 units long?

Find the measure of the indicated angle (?) round to the nearest tenth.

Mathematical Equivalence

ON

• 25 meters

• 50 meters