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45 votes
45 votes
Use identities to express the following in terms of sine and cose and then simplify your answer.

tan/sec

User Domager
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1 Answer

16 votes
16 votes


\cfrac{tan(\theta )}{sec(\theta )}\implies \cfrac{~~ (sin(\theta ) )/(cos(\theta ) ) ~~}{(1)/(cos(\theta ))}\implies \cfrac{sin(\theta ) }{~~\begin{matrix} cos(\theta ) \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }\cdot \cfrac{~~\begin{matrix} cos(\theta ) \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }{1}\implies sin(\theta )

User Njahnke
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