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

Write a project about your recent experiences. Chose two of the following topics and write a short description. Find pictures to illustrate your project

For each sentence below, use the drop-down menu to select a symbol that correctly indicates the relationship. Three is less than a number. 3 < x One more tha

Paints, glues, and liquid paper are examples of ______. carbon monoxide asbestos radon VOCs

How many solutions does this linear system have? y = x+ 2 6x – 4y = –10

Which of the following serve as enzymes?

After 1950, the authorial voices that contributed to American literature were more likely than ever to be those of __________. wealthy white aristocrats immig

The best temperature for short-term refrigeration storage is?

Find the missing side of the triangle the base of the triangle is 3 and 1/4 and the area is 12 and 2/5 find the missing side SHOW WORK

Graph of a cubic polynomial that falls to the left and rises to the right with x intercepts negative 2, negative 1, and 2 Which of the following functions best

Which statements about the formation of the solar system are true and in a correct order? A. A black hole collapsed to form the sun; small planetary objects fo