Trigonometric Right Triangles

PPC - 6.0 Right Triangle Trigonometry Lesson

Make sure to take notes!

Make sure to have calculator in degree mode!

Right Triangle Sides

• Hypotenuse: Across from the right angle

• Opposite: Across from the reference angle

• Adjacent: Next to the reference angle

Multiple Choice

Which side is adjacent to ∠B?

• AB

• BC

• AC

• ∠C

Multiple Choice

What is the side opposite ∠A?

• AB

• BC

• AC

• ∠B

Multiple Choice

What is the hypotenuse of the triangle shown?

• AB

• BC

• AC

• ∠A

Multiple Choice

What is the length of the side opposite ∠X?

• 16
• 30
• 34

Multiple Choice

What is the length of the side adjacent to ∠Z?

• 16
• 30
• 34

Multiple Choice

What is the length of the hypotenuse?

• 16
• 30
• 34

Using trig to solve for a missing side

• Calculator in degree mode

• Set up trig ratio: SOHCAHTOA

• Solve for missing side

Multiple Choice

Solve for x.

• 31.2

• 5.6

• 14.6

• 6.2

Multiple Choice

Solve for x.

• 34.9

• 40.8

• 18.0

• 10.8

Multiple Choice

Solve for x.

• 17.2

• 27.1

• 8.3

• 30.9

Using trig. to calculate an angle measure

• Calculator in degree mode

• Set up trig. ratio using the inverse function

Multiple Choice

Find the measure of the missing angle.

• 49^o
• 50^o
• 41^o
• 33^o

Multiple Choice

Find the measure of the missing angle.

• 64^o
• 26^o
• 61^o
• .008^o

Multiple Choice

Which equation is true?

• sin (x) = 14/29

• cos (x) = 14/29

• tan (x) = 14/29

• tan (x) = 29/14