Hello

can someone please verify this answer for me?

(1+cotA) / (cscA)

(1+cosA/sinA) / 1 * (sinA/1)/1

answer is CosA

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- Oct 28th 2009, 02:12 PMl flipboi lTrig identities
Hello

can someone please verify this answer for me?

(1+cotA) / (cscA)

(1+cosA/sinA) / 1 * (sinA/1)/1

answer is CosA - Oct 28th 2009, 02:16 PMe^(i*pi)
I don't follow what you did with the denominator? If you recall the way of dividing fractions we treat it as multiplying

$\displaystyle \left(1+\frac{cosA}{sinA}\right) \times sinA$

$\displaystyle \left(\frac{sinA+cosA}{sinA}\right) \times sinA = sinA + cosA$

edit: the answer cannot be $\displaystyle cosA$ because the identity doesn't hold for $\displaystyle A = \frac{\pi}{2}$