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If cos θ > 0, which quadrant(s) could the terminal side of θ lie?
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18 votes
If cos θ > 0, which quadrant(s) could the terminal side of θ lie?

User Mikel Urkia
by
3.8k points

1 Answer

10 votes

Answer:

I and IV

Explanation:

cosine is positive/greater than 0 in quadrants I and IV. Its just a rule of the unit circle.

Can remember by All Star Trig Class

meaning all the trig funtions are positive in quadrant I

sin is positive in II

tan is positive in III

and cos is positive in IV

User Danylo Korostil
by
4.3k points
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