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1 October, 14:27

Given sin (theta) = -1, find sec (theta)

a. - 1

b. 0

c. 1

d. undefined

Given cos (theta) = 1, find (theta)

a. 90°

b. 270°

c. 0°

d. 180°

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Answers (1)
  1. 1 October, 17:06
    0
    First problem:

    sec (theta) = 1/sin (theta) = 1 / (-1) = - 1

    Answer: a. - 1

    Second problem:

    cos (theta) = 1

    You need to use the inverse cosine function, cos^-1 x.

    theta = cos^-1 (1) = 0°

    Answer: c. 0°
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