Tuesday

September 2, 2014

September 2, 2014

Posted by **Kakashi** on Sunday, January 11, 2009 at 8:30am.

secx-secx sin^2x= cosx

thanks

- math (trigonometry) -
**drwls**, Sunday, January 11, 2009 at 9:52amsec x (1 - sin^2x) = cos x

sec x * cos^2 x = cos x

(1/cos x)*(cos^2 x) = cos x

cos x = cos x

**Answer this Question**

**Related Questions**

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

math - 1. (sinx/cscx)+(cosx/secx)=1 2. (1/sinxcosx)-(cosx/sinx)=tanx 3. (1/1+cos...

Pre-Calculus - How do you verify: 1.) sinxcosx+sinx^3secx=tanx 2.) (secx+tanx)/(...

Pre Calculus - Having trouble verifying this identity... cscxtanx + secx= 2cosx ...

Simplifying with Trigonometry Identities - Hi, I am a senior in High School ...

precal - 1/tanx-secx+ 1/tanx+secx=-2tanx so this is what I did: =tanx+secx+tanx-...

trigonometry - how do i simplify (secx - cosx) / sinx? i tried splitting the ...

Trig - If secx = 8 and -pi/2 < x < 0, find the exact value of sin2x Use ...

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

math/trigonometry - solve secx/2=cosx/2 over the interval[0,2pi) without using a...