Thursday

March 5, 2015

March 5, 2015

Posted by **Trig** on Sunday, November 9, 2008 at 2:16pm.

- Trigonometry -
**Reiny**, Sunday, November 9, 2008 at 3:03pmyour lack of the proper use of brackets make your equation much too ambiguous.

Furthermore, the brackets you do use, make no difference to the meaning.

If they are removed, there is no change in the order of operation, but ....

on the left side, who is divided by cos^2 x ?

is it -8/cos^2 x ? or

(8sinx-8)/cos^2 x or

(3cos^2x + 8sinx-8)/cos^2 x

each would give you a different result, the same is just as confusing on the right side.

- Trigonometry -
**Trig**, Sunday, November 9, 2008 at 3:31pm(3cos^2x + 8sinx-8)/cos^2x = (3sinx-5)/sinx+1

- Trigonometry -
**Reiny**, Sunday, November 9, 2008 at 4:09pmLS = (3(1-sin^x) + 8x - 8)/cos^2x

= (3-3sin^x+8x-8)/cos^2x

= -(3sin^2x - 8x + 5)/((1-sinx)(1+sinx))

= -(3sinx-5)(sinx-1)/((1-sinx)(1+sinx))

= (3sinx-5)(1 - sinx)/((1-sinx)(1+sinx))

= (3sinx-5)/(1+sinx)

= RS

**Answer this Question**

**Related Questions**

Trig - prove the identity (sinX)^6 +(cosX)^6= 1 - 3(sinX)^2 (cosX)^2 sinX^6= ...

Trigonometry - Prove the following trigonometric identities. please give a ...

Trig Help - Prove the following: [1+sinx]/[1+cscx]=tanx/secx =[1+sinx]/[1+1/sinx...

Mathematics - Trigonometric Identities - Prove: sin^2x - sin^4x = cos^2x - cos^...

Math - 1. Find y'(x) when xsecy - 3y sinx = 1 a) (3ycosx - sec y) / (xsec^2y - ...

Calculus - Find the derivatives of the following 18. y=〖cos〗^4 x^4...

Trigonometry. - ( tanx/1-cotx )+ (cotx/1-tanx)= (1+secxcscx) Good one! ...

Trig........ - I need to prove that the following is true. Thanks (cosx / 1-sinx...

Pre-Calc - Trigonometric Identities Prove: (tanx + secx -1)/(tanx - secx + 1)= ...

Maths - Solve this equation fo rx in the interval 0<=x<=360 3sinxtanx=8 I ...