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

National conventions no longer spend much time on debating the selection of the presidential nominee for their party. True or false?

Which word is correctly spelled and will BEST complete this sentence? A) especially B) especialy C) expecially D) special

Which student is most clearly determining new research goals

How to answer 100x^2+60x+9

What is marginalization

Dylan Thomas’ do not go gentle into that good night is using which type of stanzas? A- couplets B- Tercets C- quatrains D- none

Correct the inappropriate shift in verb voice or mood by rewriting the sentence below."if it was up to me, I wouldn't let anybody near that crystal vase"

Holger: __hallo___ , Kurt! Kurt: Hallo, Holger! ______ ______. Holger: Wie _____ ? Kurt: Es geht mir _____. Und dir? Holger: Es geht mir _____.

Which of the following is an example of a quasi-public good?A) cable televisionB) organic applesC) stock of knowledge in the public domainD) crime prevention

The poem uses which of the following forms?A.terza rimaB.octavesC.quatrainsD.refrainsE.sestets