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

18. What do complex carbohydrates contain that simple carbohydrates do not?

how does the poet use commas in lines 11 and 12 to change the sonnet's rythm

A marker of new skin claims that their product helps prevent skin acne by increasing the discovered substance which they called Anti-A - Factor. According to th

How do you assess the competitive landscape and identify your unique value proposition?

7x 2 x 1 and minus, 6, x, squared, minus, 8, x, minus, 10−6x 2 −8x−10.

ue el escuela (minutos) 20 201 201 202 21 21호 21호 21호 22 B. Lewis dijo que la diferencia entre la vez que llegó más rápido y la vez que más tardó fue 2 minutos.

Which algebraic rule describes the translation of ADEF to AD'EF? D D' u S 2 -6-5-4-3-2-11 77? w? 49 Es E 23456 A. (x, y) - (x-7,y-4) B. (x, y) - (x-4, y-7) C. (

How did Tim O’Brien feel about killing a man

Identify the translation of the figure with the vertices A(1,-3),B(3,2),C(-5,4),"and" D(6,-6) along the vector 〈3,-1〉.

Jennifer, a high school senior, takes an official visit to your institution in the fall of her senior year. During the spring of her senior year, you institutio