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Use fundamental identities to write the first expression in terms of the second, for any acute angle θ. cos θ, cot θ
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Use fundamental identities to write the first expression in terms of the second, for any acute angle θ.

cos θ, cot θ

User Ospho
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1 Answer

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cot(theta) = 1/tan(theta) = cos(theta)/sin(theta) =

cos(theta)/sqrt(1-cos^2(theta))

cot(theta) = cos(theta)/sqrt(1-cos^2(theta))
cot^2(theta)(1-cos^2(theta))=cos^2(theta)
(cot^2(theta)+1)cos^2(theta)=cot^2theta

cot(theta)/sqrt(cot^2(theta)+1)
User Agentsmith
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