Finding the Missing Angle or Side for Right Triangle Trigonometry

Find the trig ratios of B and complete the table.

a

b

c

15/8

15/17

8/17

Tags

CCSS.HSG.SRT.C.6

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.

Tags

CCSS.HSG.SRT.C.8

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

d

e

f

a

b

cos

adj

opp

no info

sin

hyp

tan

Tags

CCSS.HSG.SRT.C.6

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

• subtract

• Square everything

• Use Pythagorean theorem

• Plug in the 2 legs for a and b

• Take the square root

Tags

CCSS.8.G.B.7

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

b

d

e

f

a

adj

hyp

no info

tan

cos

sin

opp

Tags

CCSS.HSG.SRT.C.6

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

d

e

f

a

g

hyp

adj

tan

no info

opp

cos

sin

Tags

CCSS.HSG.SRT.C.6

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

d

e

f

a

c

sin

hyp

tan

no info

cos

adj

opp

Tags

CCSS.HSG.SRT.C.6

Solve for the missing angle.

• 50.2

• 93.1

• 12.6

• 42.2

Tags

CCSS.HSG.SRT.C.8

Find the measure of the missing angle.

• 49^o

• 52^o

• 41^o

• 33^o

Tags

CCSS.HSG.SRT.C.8

Find the length of side y.

• 22.32 cm

• 36.5 cm

• 76.34 cm

• 87.76 cm

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11