If cosx= -1/2 for 90degrees

Name: Using SohCahToa to find the trig ratios on an angle in the second quadrant
Uploaded: 2023-03-03T17:04:07+00:00
Description: Answer by Richard C. to If cosx= -1/2 for 90degrees<x<180degrees, calculate cosx/sinx

Question

If cosx= -1/2 for 90degrees<x<180degrees, calculate cosx/sinx

Aime F. · Accepted Answer

If cosx = –1/2 for 90º < x < 180º then x = arccos(–1/2) = 120º. Note that cosx = cos(360ºn ± x) for any integer n, so the interval of x is needed to specify a certain x.

Richard C. · Answer

If cosx= -1/2 for 90degrees<x<180degrees, calculate cosx/sinx

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If cosx= -1/2 for 90degrees<x<180degrees, calculate cosx/sinx

2 Answers By Expert Tutors

Still looking for help? Get the right answer, fast.

OR

RELATED TOPICS

RELATED QUESTIONS

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I need help trying to sole tan^2 x =1 where x is more than or equal to 0 but x is less than or equal to pi

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