rodelroberto
rodelroberto
03-11-2015
Mathematics
contestada
Verify
(2cos2x)/(sin2x) =cotx - tanx
Respuesta :
crisforp
crisforp
03-11-2015
cos2x = (cosx)^2 - (sinx)^2;
sin2x = 2sinxcosx;
Then, (2cos2x)/(sin2x) =2[ (cosx)^2 - (sinx)^2 ] / (2sinxcosx) = [ (cosx)^2 - (sinx)^2 ] / (sinxcosx) = (cosx)^2 / (sinxcosx) - (sinx)^2 / (sinxcosx) = cosx/sinx - sinx/cosx = cotx - tanx;
Answer Link
VER TODAS LAS RESPUESTAS ( 75+ )
Otras preguntas
In 377 BC, what city was the capital of a small kingdom along the Mediterranean coast of Asia minor
Tama bang payagan ni ceiling so kulas sa patuloy nitong pagsusugal ? bakit?
what are the problem and solution of education in nepal
List and explain the 8 roles of the President of the United State
What freedom do we need in US
Molecular iodine, I2(g) dissociates into iodine atoms at 625 K with a first-order rate constant of
which statement about writing a research paper is true? A. using an outline will help organize the facts before writing.b. a rough draft is only needed if you a
The United States and its allies supported: (Circle One) Mujahideen Communist or Government The Soviet Union and its allies supported: (Circle One) Mujahideen
Describe two ways that water surrounding Greece affected the Ancient Greeks.
what is the answer of 18x 2 and 3
