Monday

July 28, 2014

July 28, 2014

Posted by **Vania** on Thursday, May 12, 2011 at 2:22am.

(sec x/csc x minus cot x) minus (sec x/csc x + cot x)= 2 csc x

- pre cal -
**Reiny**, Thursday, May 12, 2011 at 7:35amIs it

(sec x/(csc x - cot x) - (sec x/(csc x + cot x))= 2 csc x or

sec x/csc x - cot x - sec x/csc x + cot x= 2 csc x

The way you typed it, according to order of operation, it would be that last one, but that is not an identity.

so

(sec x/(csc x - cot x) - (sec x/(csc x + cot x))= 2 csc x

LS = (secxcscx + secxcotx - secxcscx + secxcotx)/(csc^2x - cot^2x)

= 2secxcotx/(csc^2x - (csc^2x - 1))

= 2(1/cosx)(cosx/sinx)

= 2/sinx

= 2cscx

= RS

- pre cal -
**andy**, Thursday, May 12, 2011 at 11:48amNeed some help with this: find all solutions of cot^2 x=3 in the interval [0,2pi)

- pre cal -
**andy**, Thursday, May 12, 2011 at 11:59amNeed some help with this: find all solutions of cot^2 x=3 in the interval [0,2pi)

- pre cal -
**Anonymous**, Tuesday, May 17, 2011 at 1:21amVerify the Identity for (1-tanx)^2 = sec^2x-2tanx

**Related Questions**

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

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

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

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

trig - verify : [sec(x) / csc(x) - cot(x)] - [sec(x) / csc(x) + cot(x)] = 2csc(x...

Pre-Calculus - I don't understand,please be clear! Prove that each equation is ...

Pre-Cal - 1) verify the identity sec^2 (pi/2 - x) -1 = cot^2 x I think that we ...

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

pre-cal - verify the identity... cot(-a)cos(-a)+sin(-a)=-csc(a)

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