arcanos616p53hw1 arcanos616p53hw1

13-05-2022
Mathematics

contestada

Sum and Difference Identities
Find the value of the expression.
cos(-pi/12)
What would -pi/12 be the sum or difference of?

Respuesta :

LammettHash LammettHash

13-05-2022

Notice that

1/6 - 1/4 = -1/12

Then

cos(-π/12) = cos(π/6 - π/4)

cos(-π/12) = cos(π/6) cos(π/4) + sin(π/6) sin(π/4)

cos(-π/12) = (√3/2) (1/√2) + (1/2) (1/√2)

cos(-π/12) = (√6 + √2)/4

Answer Link

Otras preguntas

y=2x+1 (1) What is the slope of this line? (2) What is the x-intercept? (3) What is the y-intercept?

Can I get help onn this please

In this excerpt,the use of the word splintered has a ____ connotation

Plz help me with this

what is the area of a rectangle with a length of 37 in and the width of 45 inches

If an object measures 29000 pm, how long is it in mm?

PLEASE ANSWER CORRECTLY, will give brainlist. Two spinners are spun. One has 5 sections labeled Red, Orange, Purple, Yellow, and Green. The other has three sect

Water evaporates from a pond at a rate of 0.05 inches per hour. What is the change in inches in the water level of

how did the Colombian Exchange affect European trade

The Supreme Court deemed the Cherokee an independent nation. Why were the Cherokee forced onto the Trail of Tears?