Trigonometry Review Game

• Do not use a calculator on any of these questions until specified otherwise.

Sin(45) = ?(1 min)

Answer:

Sin(45) = sqrt(2)/2

cos(45) = ?(15 secs)

Answer

cos(45) = sqrt(2)/2

Sin(45) = cos(45) since they are cofunctions.

cos(60) = ?(1 min)

answer

cos(60) = 1/2

tan(60) = ?(1 min)

answer

tan(60) = sqrt(3)

tan(90) = ?(1 min)

answer

tan(90) = undefined

sin(0) = ?(1 min)

answer

sin(0) = 0

Find the exact value:

sin2 60 + cos 60 =

answer

sin2 60 + cos 60 = 5/4

csc2(30) = ?

answer

csc2(30) = 4

Describe the co function theorem and give an example.

Answer:

Answers will vary. Anything to the likes of “If two angles are cofunctions, then the trig function of one angle will equal the cofunction of its complement. Ex: sin30 = cos60” would do.

Ok, now you can use a calculator.

Cot(64.8) = ?

answer

Cot(64.8) = .4706

Find the cofunction for the following. Keep your answer in degrees and minutes.

Csc(63o 14’) = ?

answer

Find the cofunction for the following. Keep your answer in degrees and minutes.

Csc(63o 14’) = sec(26o 46’)

81o 9’ – 43o 47’ = ?

answer

81o 9’ – 43o 47’ = 37o22’

Find x

Csc(x) = 1. 6734

answer

X = 36.7o

The rest of the test are right triangle problems.