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Which of the following expressions is equal to -1? Help plzzz
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1 vote
Which of the following expressions is equal to -1? Help plzzz

Which of the following expressions is equal to -1? Help plzzz-example-1
User Mark Ingram
by
5.1k points

2 Answers

3 votes

Answer:

Sec 90

Explanation:

Sec 90 is equals to -1

User Andrew Magee
by
5.5k points
3 votes

Answer:

csc 270°

Explanation:

sec 90° = 1/cos 90° = 1/0 which is undefined

sin 180° = 0

csc 270° = 1/sin 270° = 1/-1 = -1

User Kevin Hendricks
by
5.2k points
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