Finding Missing Sides and Angles in Right Triangles

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

How do you solve the for the missing leg of a right triangle when you have only the right angle and 2 of the sides?

• You use the sin trig ratio.

• You use the cos trig ratio.

• You use the tan trig ratio.

• You use Pythagorean theorem.

To find the missing side of a right triangle given 2 legs, you will...

• Use Pythagorean theorem

• Plug in the 2 legs for a and b

• Square everything

• Add

• Take the square root

To find the missing side of a right triangle given 1 legs and the hypotenuse you will...

• Use Pythagorean theorem

• Plug in the 2 legs for a and b

• Square everything

• subtract

• Take the square root

Solve the following triangle

• A

• B

• C

• D

Solve the right triangle.

• o, AB = 11.58, AC = 7.29

• o, AB = 7.29, AC = 11.58

• o, AB = 11.58, AC = 7.29

• o, AB = 7.29, AC = 11.58

In triangle MNP, the measure of angle M is 90, the measure of angle N is 25 and MN=6 . Find MP.

• 14.2

• 12.9

• 2.8

• 6.6

Solve the right triangle.

• <B = 39^o, AB = 11.58, AC = 7.29

• <B = 39^o, AB = 7.29, AC = 11.58

• <B = 129^o, AB = 11.58, AC = 7.29

• <B = 129^o, AB = 7.29, AC = 11.58

Find the trig ratios of B and complete the table.

a

b

c

8/17

15/8

15/17

Label the sides of the triangle and choose the correct trig ratio

b

d

e

f

a

no info

sin

cos

opp

tan

adj

hyp