Thursday

September 18, 2014

September 18, 2014

Posted by **gopi** on Friday, December 28, 2012 at 4:09am.

- trignometry -
**Steve**, Friday, December 28, 2012 at 4:54amx = pi/4, so cos2x = 0

since y ≠ pi/2, sin2y ≠ 0

I suspect a typo somewhere

**Answer this Question**

**Related Questions**

advanced functions - Show that tanx = sinx / cosx can be written as tan(x+y...

adv functions - Show that tanx= (sinx/ cosx) can be written as: tan(x-y) = (tanx...

Math trignometry - how can you condense these cos^3x* cos2x^2 cos^3x+ cos2x^2 ...

Trig - If tanx = 2/3 tany = 1/2 then tan(x-y) = ?? a.7/4 b.7/6 c.1/8 d.8/6 which...

Precal - show that: (1-tanx)/(1+tanx)= (1-sinx)/(cos2x)

Math please help quick - Which of the following are identities? Check all that ...

Trigonometry - Given that a^2+b^2=2 and that (a/b)= tan(45degee+x), find a and b...

Trigo - Given that a^2+b^2=2 and that (a/b)= tan(45degee+x), find a and b in ...

maths - prove that 1+sin2x-cos2x / sin2x+cos2x = tanx

trignometry - how to find derivative of (2+cotx)/(7-tanx)