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find tan θ

0 votes

If secθ = 3 and sin θ>0, find tan θ

asked Dec 8, 2017 in PRECALCULUS by anonymous

1 Answer

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sec θ = 3

tan θ=√(sec^2θ -1)

        =√(3^2 -1)

        =√8

sin θ>0 means θ is in 1st quadrant, tanθ is positive.

tan θ   =√8

answered Dec 11, 2017 by johnkelly Apprentice
reshown Dec 11, 2017 by bradely

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