solve trigonometric equation for θ with 0 ≤ θ < 2 π

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fnenuarntyrl

Mathematics

Description

tan^2(θ)-sec^2(θ)=cos(-θ) 

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Explanation & Answer

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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


Please let me know if you need any clarification. I'm always happy to answer your questions.


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