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

How many $0.21 pencils can be purchased for $7.00? Show your work.

can humans cause a imbalance in the food chain

what is the balanced chemical equation for caffeine?

Which words in the sentence are the appositive? Which words does the appositive rename? The author Charles Dickens wrote some of the best-loved novels of all

make a short dialogue about the introduction!

Create the shortest poem ever in world history. This you do, your name could be on the Guiness World Records!

An oak tree that is 220 years old produced acorns at two different rates. Until it reached maturity, it produced an average of 900 acorns a year. However, once

If a=3 and b=5, what is the value of 3a + b to the power of 2?

Jane likes to sunbathe She has read about risks from sunbathing and how to reduce them. She thinks she is not at risk from sunbathing because she has dark skin.

Which words in the sentence are the appositive? Which words does the appositive rename? The author Charles Dickens wrote some of the best-loved novels of all