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Earn +20 ptsQ: What is the cosine of -90?
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Continue Learning about Algebra
What is cos 90 minus theta?
cosine (90- theta) = sine (theta)
How do you write the expression sin 37 in terms of cosine?
90+ whatever number is in form of sin.
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
What is cosine to the negative first power?
[ cos(Θ) ]-1 = 1/cosine(Θ) = secant(Θ)
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