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tan^2(θ)-sec^2(θ)=cos(-θ)
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tan^2(θ)-sec^2(θ)=cos(-θ)
-1=cos(θ)
tan^2(θ)-1-tan^2(θ)=cos(-θ)
-1=cos(-θ)
-1=cos(θ)
reference for rules I used:
http://www.sosmath.com/trig/Trig5/trig5/trig5.html
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Most Popular Content
MTH 156 CSU Brazil Population Growth Rate Statistical Analysis
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