ruperttshepo ruperttshepo

02-05-2021
Mathematics

contestada

If sin12 = k determine cos24 in terms of k

Respuesta :

LammettHash LammettHash

02-05-2021

Recall the double-angle identity,

sin²(x) = (1 - cos(2x)) / 2

Now if sin(12°) = k, then

k ² = sin²(12°) = (1 - cos(24°)) / 2

→ cos(24°) = 1 - 2k ²

Answer Link

Otras preguntas

Find the prime factorization of 148

Which of the following is a true statement about ocean ridges

What is the solution to this equation? 2(7x+4) = 4x - 6(2 - x) + 7 3 O A. X=- O x 16 O B. X=- 13 16 C. 13 4 3 O D. X=- 4

state the steps to launch website using Web browser icon on desktop

The bag contains 20 red marbles, 30 white marbles, and 40 blu a. What is the ratio of red to blue marbles? b. What is the ratio of white to red marbles? c. If o

In the medieval period, it was common to hear secular music from troubadours, trouvères, and minnesingers. Who were these people?.

What does it mean to take a percent of something?

the annuity benefit or payment option requiring the greatest amount of capital per $1,000 of benefit is:

PK has endpoints at P(6,-3) and K(3,-9). How long is PK

Please I Really Struggling