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April 19, 2014

April 19, 2014

Posted by **Isabella** on Monday, March 24, 2008 at 8:46am.

1.(COTx)(SECx)(SINx)=1

2.TANx + COTx = (SECx)(CSCx)

3.(COSt)(COTt) = 1-SIN^2t / SINt

Any help would be so greatly appreciated!!!

- Math (Trigonometry) -
**drwls**, Monday, March 24, 2008 at 9:55am1. Write cot and sec in terms of sin and cos.

(cosx/sinx)(1/cosx)(sinx) = ?

See how the terms cancel?

2. (sinx/cosx) + (cosx/sinx)

Create a common denominagtr and add numerators.

= [sin^2x + cos^2x]/(sinx cosx)

= 1/(sinx cosx)

= (1/sinx)(1/cosx) = ?

3. I assume that there should be parentheses around (1-sin^2t). Replace it with cos^2 t and proceed as with the others.

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