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 ( 51+ )
Otras preguntas
i will give brainly
what happen under president johnsons plan for reconstruction
help and thank youu~
in 2-3 sentences, Explain the Supreme courts decision?
Circe warned Odysseus about the ___, who sat on the rocks and lured sailors to their deaths. Sirens Lotus Eaters Scylla Cyclops Charybdis
Which radioisotope is used to treat thyroid disorders?.
An organization of high school seniors performs services for patients at Leer Hospital. These students are volunteers and perform services that the hospital wou
Pretest: Unit 2 Question 34 of 45 If WXWZ, which of the following statements CANNOT be true?
a scientist notes that the number of bacteria in a colony is 50.3 hours later, she notes that the number of bacteria has increased to 80. if this rate of growth
EASY POINTS What is the slope-intercept equation of this line?
