3 years ago

Find the EXACT value of sec (-120 degrees)

Mathematics

2 answers:

Mademuasel [1]3 years ago

7 0

Well sec(-120) = 1/cos(-120).

We know that cos(-120) = -1/2.

So, 1/(-1/2) = -2.

This means that sec(-120) = -2.

kenny6666 [7]3 years ago

3 0

Sec is 1/cos so sec -120 is 1/cos -120 which is -2

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