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 idea is included in the concept of natural law?

find the measure of one interior angle of a rug shaped like a regular octagon

how would you write this as an algebraic equation? k less than 24

Interphase must occur once before meiosis can happen. (Same thing for mitosis). What would happen if interphase didn’t occur first?

what does the word origami mean

Which department did the US government create immediately after the 9/11 terrorist attacks?

Jason purchased a pack of game cards that was on sale for 13% off. The sales tax in his county is 8%. Let y represent the original price of the cards. Write an

Why did journalists call the Alaska purchase of 1867 Seward's Folly

Under the Constitution of the United States, you may not be deprived of life, liberty, or property, without A. being charged with a crime. B. due respect for l

Which activity helps develop muscular endurance?