Tuesday

November 25, 2014

November 25, 2014

Posted by **briana** on Sunday, January 2, 2011 at 4:58pm.

- trig -
**MathMate**, Sunday, January 2, 2011 at 5:24pmUse the following identities to express everything in sin(x), cos(x), tan(x) and cot(x):

sec(x)=1/cos(x)

csc(x)=1/sin(x)

Unless there is a typo on the right-hand-side, I find the given*identity*not true.

- trig -
**briana**, Sunday, January 2, 2011 at 6:44pmi put it in my graphing calculator, though, and they graph the same function

- trig -
**MathMate**, Sunday, January 2, 2011 at 8:13pmThis is why I suspected there is a typo.

The left-hand-side evaluates to -2csc(x).

The right-hand-side, 2*csc(x).

I suggest you recheck the expressions posted.

Here's a plot of each side of the identity*as posted*.

http://img508.imageshack.us/img508/3851/1294005524.png

- trig-correction -
**MathMate**, Sunday, January 2, 2011 at 8:15pmThe left-hand-side evaluates to -2cot(x).

**Answer this Question**

**Related Questions**

Math - Trig - I'm trying to verify these trigonometric identities. 1. 1 / [sec(x...

trig - For each expression in column I, choose the expression from column II to ...

pre cal - can someone please show me how to verify this identity? (sec x/csc x ...

trigonometry repost - Reduce (csc^2 x - sec^2 X) to an expression containing ...

Math - Trigonometry - Verify the following: 1. cos x/(1-sinx)= sec x + tan x 2...

Trigonometry - Hello all, In our math class, we are practicing the trigonometric...

verifying trigonometric identities - How do I do these problems? Verify the ...

Trigonometry - Verify the identities. 1.) SIN[(π/2)-X]/COS[(π/2)-X]=...

Math/Trig - Period: Asymptotes: Range: a) y= 2 sec (x) + 1 b) y= -2 csc (x - pi/...

Trigonometry - Verify the identities. 1.) √1-COSθ/1+COSθ= 1+SIN...