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

what are the pros and cons of the stamp act ?
Robert has a history of depression but worries that if he seeks treatment he will be fired from his job. Robert’s apprehension to get help is an example of ____
how many carbons in amino acids?
What was the name of the general that led the Nazi forces in the Battle of El Alamein? A. General Eisenhower B. General Rommel C. General Goebbels D. General Hi
Who founded the National Grange?
what is the main idea of the paragraph. have yo ever wondered how images find there ways onto televisions screen. some tv shows are delivered to homes thro
What percent of 925 is 37%
What is the value of the expression |x| + |y + z| when x = –6, y = –3, and z = –5?
Which of the following climates is most suited for physical weathering? A. Hot B. Cool C. Warm D. Dry
What is another word for cytosol