Right Triangle Trigonometry and Inverse Trigonometry

Set up the problem...

• sin X = 41/28

• tan X = 41/28

• cos X = 28/41

• sin X = 28/41

Find the measure of the missing angle.

• 64^o

• 26^o

• 61^o

• .008^o

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

• 9.4

• 55.2

• 20.15

• 19.4

Solve for the missing angle

• 50

• 0.053

• 36.9

• 95

Find A, B, and C.

angle A = ​ ​ (a)  

angle B = ​ (b)  

angle C = (c)  

• 20.49

• 90

• 69.51

• 32.84

• 57.16

• 37.17

• 52.83

• 60

• 30

Match the following definitions with the correct word

• Arcsine

• The --------- of a number between 0 and 1 is the

  acute angle whose sine is that number.

• Arctangent

• The ---------- of a number between 0 and 1 is the

  acute angle whose cosine is that number.

• Arccosine

• The ----------- of a positive number is the acute

  angle whose tangent is that number.

Mathematical Equivalence

ON

Solve for the missing angle

• 50.2

• 93.1

• 12.6

• 42.2

Fill in the blank...
SOH ___ TOA

• COH

• CAH

• COA

• CHA

To use the Pythagorean Theorem, we need...

• A triangle with 2 known angles

• A right triangle with 2 known angles

• A triangle with 2 known sides

• A right triangle with 2 known sides