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

combine like terms y+6+5(y+8)

The Golden Age of Athens was ruled by a. Draco. b. Clisthenes. c. Solon. d. Pericles.

_____ occurs when the response serves to counteract the stimulus. Metabolism Positive feedback Negative feedback

If an RNA strand has 20 adenine bases, how many thymine bases would it have? Question 5 options: A) 20 B) 40 C) none, because RNA does not have thymine

Which one of the following phrases contains vivid words that create imagery? A. Cotton-like clouds B. Twenty soldiers C. Traveled far D. Sang a solo

when is gene expression blocked in the lac operon system?

21 fewer stars than three times a nymber h

M.Barber uses 7/9 yard of wire for a ceiling fan. He uses 1/3 yard of wire to fix a light switch. How much more wire did he use for his ceiling fan than his lig

Why was Egypt’s former president imprisoned after he resigned from office?

A restaurant uses 3 pounds of pasta for a party of 14 people. If they are cooking pasta for a party of 56 people, what should they do?