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Earn +20 ptsQ: What is the cosine of 45?
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Continue Learning about Algebra
Reciprocal of a cosine?
Reciprocal of Cosine is Secant
What is the cosine of -90?
Cosine of -90 is 0.
What is the ratio that is the reciprocal of the cosine?
it would be secant, 1/cosine
What is cosine to the negative first power?
[ cos(Θ) ]-1 = 1/cosine(Θ) = secant(Θ)
Which angle has a negative sine and a positive cosine?
All the angles in 4th quadrant have positive cosine and negative sine e.g. 280,290,300,310...etc.
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