Friday

November 28, 2014

November 28, 2014

Posted by **kim** on Sunday, April 19, 2009 at 5:31am.

- math -
**Reiny**, Sunday, April 19, 2009 at 7:51amyes,

since tan 2x = 2tan x/(1-tan^2 x)

and cot 2x = 1/tan 2x, you formed the reciprocal correctly

**Answer this Question**

**Related Questions**

calculus (check my work please) - Not sure if it is right, I have check with the...

math - cot^-1(2tan(cos^-18/17))+tan^-1(2tan(sin^-18/17))=tan^-1300/161

Pre Cal - could someone please tell me what the other angle identity of tan is? ...

Math - Trigonometry - Verify the following: 1. cos x/(1-sinx)= sec x + tan x 2...

trigonometry repost - Reduce (csc^2 x - sec^2 X) to an expression containing ...

need asap trigg - simplify the expression by using a double angle formula or a ...

Trig-Weird Geometry Problem - Determine all triangles ABC for which tan(A-B)+tan...

Trig. - sec^2xcotx-cotx=tanx (1/cos)^2 times (1/tan)-(1/tan)=tan (1/cos^2) times...

PreCalculus - Hi I need some assistance on this problem find the exact value do ...

Precalc? - Suppose that Cot(theta) = c and 0<theta<pi/2. what is a formula...