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 ( 38+ )
Otras preguntas
Last edit was 3 minutes ago 14 B I U A G-D Y 13 E E E E 1 2 3 4 5 6 11. A change that produces matter with a different composition than the original matter is c
Use the drawing tools to form the correct answer on the number line. Graph the solution set to this inequality. -2(x + 6) > -40
7. Which of the following statements is NOT true? a. All integers are rational numbers. b. Some rational numbers are whole numbers. c. All whole numbers are nat
21. Supplied raw materials to England? O A. British O O B. French O C. colonies D. states
On December 29, 2022, James Company sold a debt security that had been purchased on January 4, 2021. James owned no other debt securities. An unrealized holding
how do authors use the resources of language to impact the way an audience thinks, acts, and perceives the world?
yo if i can get some help that be good IF giant IF your right yu just may get BRAINLIEST but for your help you get 5 STARS and 69 POINTS Question 2 (Essay Worth
Which of the following is an example of human geography changing physical geography
How does the Constitution Guard against Tyranny?
The fossil record shows that early species of horses were generally ______ in size, but many lineages since about 30 million years ago exhibit substantial chang
