Tuesday

July 29, 2014

July 29, 2014

Posted by **ken** on Tuesday, February 12, 2013 at 9:04am.

tanx=cscx-cotx

- math -
**Reiny**, Tuesday, February 12, 2013 at 9:37amRS = 1/sinx - cosx/sinx

= (1- cosx)/sinx

≠ tanx

this is not an identity,

let x = 45°

tan45 = 1

csc45 - cot45 = √2 - 1 ≠ 1

all we needde was one counterexample to show it to be false.

**Related Questions**

Math - 1)A piano tuner uses a tuning fork. If middle C has a frequency of 264 ...

drwls - My previous question: Verify that (secx/sinx)*(cotx/cscx)=cscx is an ...

Trig - verify the following identity: tanx+cotx/cscx=secx

Pre Calculus - (secx)/(tanx)+(cscx)/(cotx)=secx+cscx Please help me verify this ...

trig - Verify the trigonometric identity. Please show all steps. tanx-cotx/tanx+...

trig - verify the identity (tanx+cotx) (1) __________ = ______________ (tanx-...

trig - verify the identity: tan^2x(1+cot^2x)=1/1-sin^2x Verify the Id: tanx + ...

Math - Im really struggling with these proving identities problems can somebody ...

Trig - Verify that (secx/sinx)*(cotx/cscx)=cscx is an identity. (x=theta BTW)

Pre Calculus - Establish the identity tanx/2=cscx-cotx