ruperttshepo ruperttshepo
  • 02-05-2021
  • Mathematics
contestada

If sin12 = k determine cos24 in terms of k

Respuesta :

LammettHash
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

Which of the following is true about D- Day (Operation Overlord)? A. The invasion took place in France. B. The invasion took place in Germany. C. The invasion t
I need some info on the Mandan belief system. They were animistic. I want to know some info how they performed and how they worshipped, including more about the
I will award 50 points and brainliest to the best proof with explanation :D
Which of the following inequalities has (3, 1) as a solution? A. 2x - y < 3B. 2x + y < 3C. 2x + y > 6D. 2x - y > 6​
Write any two main business centers of karnali province​
Solve for p. 2(p+1)=16 p = 7 p = 7.5 p = 8.5 p = 9
Graph the inequality 2x + y > 4 and shade the correct solution set.
someone explain it plz ​
The school that Beth goes to is selling tickets to a spring musical. On the first day of ticket sales the school sold 2 senior citizen tickets and 7 student tic
write the equation Has slope of -1/7 and goes through the point (14,-5) in point-slope form.