If cos θ = 2/9, and θ is in the fourth quadrant, what is cot θ?
a) - √77 / 77
b) - 2/9
c) - 2√77 / 77
d) - 9√77 / 77
If sin θ = 15/17, and θ is in the third quadrant, what is tan θ?
a) 8/15
b) - 8/15
c) 15/8
d) - 15/8
Which of the following has an amplitude equal to 2?
a) f(x) = sin 2x
b) f(x) = 2 tan 2x
c) f(x) = 2 csc x
d) f(x) = -2 cos 2x
Which of the following has a period equal to ℼ/2 ?
a) f(x) = sin 2x
b) f(x) = 2 tan 2x
c) f(x) = 2 csc x
d) f(x) = -2 cos 2x
Which of the following statements is not true about the graph of the function f(x) = -2 cos [ 1/2 (x + ℼ/2) ] - 3?
a) The amplitude is 2
b) The period is 4ℼ
c) The domain is the set of all real numbers
d) The range is the interval [ 4 , 8 ]
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