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Earn +20 ptsQ: What is cosine of 0?
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Continue Learning about Algebra
What is the cosine of -90?
Cosine of -90 is 0.
Reciprocal of a cosine?
Reciprocal of Cosine is Secant
What is the ratio that is the reciprocal of the cosine?
it would be secant, 1/cosine
Is cos theta is equal to 1?
No, not necessarily. Cosine theta is equal to 1 only when theta is equal to zero and multiples of 2 pi radians or multiples of 360 degrees. This is because cosine theta is hypotenuse over adjacent, and the ratio 1 only occurs at 0, 360, 720, etc. or 0, 2 pi, 4 pi, etc.
What is cosine to the negative first power?
[ cos(Θ) ]-1 = 1/cosine(Θ) = secant(Θ)
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