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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).
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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
answer csc2(30) = 4
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.
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’)
answer 81o 9’ – 43o 47’ = 37o22’
Find x Csc(x) = 1. 6734
answer X = 36.7o