lesleal31 lesleal31

04-05-2017
Mathematics

contestada

Rewrite cos2 67.5° – sin2 67.5° using a double-angle identity.
cos 135°

sin 135°

cos 33.75°

sin 33.75°

Respuesta :

zebsi0n zebsi0n

04-05-2017

The Double Angle identity for cos is as follows:
[tex]cos(2a)=cos^2(a)-sin^2(a)[/tex]
Because this is the same form as the equation you asked for, just double 67.5 to get cos(135).

Answer Link

Otras preguntas

Which of these is a power of the state executive branch? A. the power to create new laws B. the power to collect taxes C. the power to declare a war

Would it be the exponent 4 or 12????

________ es para todos. A. La justicia B. El justicia C. Justicia D. Las justicia

Place the following events in order. Reconstruction Westward Expansion American Revolution American Civil War

How did life change for women during World War II?

Please help me with this question

How did President Nixon's resignation affective relationship between the politicians and the media

A coil lies flat on a level tabletop in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed fro

which is a example of a correct citation for a website with an unknown author? A. author unknown. "Frances Hodgson Burnett." penguin.com. The Penguin Group, 20

Lynn walks into a local convenience store to buy chewing gum. she more than likely will employ _____ in deciding to make that purchase.