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cute.2 · Mar 12, 2011, 05:52 AM

sec times tan times sin equals?

Unknown008 · Mar 13, 2011, 02:59 AM

Is that:

$\sec\theta \times \tan\theta \times \sin\theta = ?$

?

Convert the sec and tan ratios into sin and cos ratios first.

xx_hannah_xx · Mar 13, 2011, 04:47 AM

if it is secθ x tanθ x sinθ , then its pretty simple
secθ = 1/tanθ
1/tanθ x tanθ x sinθ
the 1/tanθ will cancel with the tanθ
so
secθ x tanθ x sinθ = sinθ since the first two terms cancel each other out

Unknown008 · Mar 13, 2011, 04:52 AM

Originally Posted by xx_hannah_xx

if it is secθ x tanθ x sinθ , then its pretty simple
secθ = 1/tanθ
1/tanθ x tanθ x sinθ
the 1/tanθ will cancel with the tanθ
so
secθ x tanθ x sinθ = sinθ since the first two terms cancel each other out

That is not correct.

$\sec\theta \neq \frac{1}{\tan\theta}$