Wednesday

August 20, 2014

August 20, 2014

Posted by **Don** on Saturday, December 17, 2011 at 6:50pm.

csc3theta - csctheta + cottheta/csctheta = cotsqtheta + costheta

wow ... try that one

- Trig -
**Steve**, Sunday, December 18, 2011 at 5:32amHere's where parentheses come in handy.

As written, the identity is wrong. What you meant to say was

(csc^3 - csc + cot)/csc

= (csc(csc^2 - 1) + cot)/csc

= (csc cot^2 + cot)/csc

= csc cot^2/csc + cot/csc

= cot^2 + cos/sin * sin

= cot^2 + cos

**Related Questions**

Trig - The next two steps in solving this trig identity question are ??? 1/...

Trig - Find sin2theta, cos2theta if csctheta=13/12 and lies in quadrant II. ...

trig - cos(+pi/2-theta)/csctheta+cos^2theta

nicole - 1. determine the exact value.. cot 7pi/6 and sec(-210degrees) 2. ...

Rounding#'s - use a calculator to find each rounded to 4 decimal places. 1) sec ...

Prove trig identity - Prove the following trigonometric identity: (sec^2x-1)(csc...

Trig - Find all solutions of the equation in the interval [0,2pi). sqrt(3)...

Math- gr.12 Trig. - Hi, could someone explain to me how to use a counterexample...

Geometryy - given that sec theta = radical13/whole number 3, and csctheta<0 ...

Trig - Prove that the equation is an identity: cot4theta - csc4theta = -cot sq ...