Sunday

September 21, 2014

September 21, 2014

Posted by **Anne** on Saturday, March 27, 2010 at 4:07pm.

*note: the exponents are just numbers. there are no variables in the exponents.

- trig -
**Anonymous**, Saturday, May 4, 2013 at 7:57amukgggg

- trig -
**Anonymous**, Monday, June 2, 2014 at 2:40amwe know tan2A= 2tanA / 1-tan2A

using this formula,

tan4x = tan2.(2x)

=2tan2x / 1-tan22x

= 2(2tanx/1-tan2x) / 1-(2tanx/{1-tan2x}2)

simplify to get. , 4tanx(1-tan2x) / 1-6tan2x+tan4x.

**Answer this Question**

**Related Questions**

trignometry - Tan4x=4tanx(1-tan^x)/1-6tan^x+tan^^x ,prove

Trig - tan 15° using composite argument? - tan 15° tan (45°-30°) (tan 45° - tan ...

Math-Trigonometry - Show that if A, B, and C are the angles of an acute triangle...

Trigonometry desperate help, clueless girl here - 2. solve cos 2x-3sin x cos 2x...

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

trig - please help me. use trig. identities to find the exact value. tan 25° + ...

trig - please help me. use trig. identities to find the exact value. tan 25° + ...

agl 2 - rewrite: tan 4 X + tan 2 X/ 1 - (tan4X)(tan2X)

Trig Identities - Proving identities: 1) 1+ 1/tan^2x = 1/sin^2x 2) 2sin^2 x-1 = ...

Trigonometry - 1.Solve tan^2x + tan x – 1 = 0 for the principal value(s) to two ...