Question

If cos(2m) = .11, which of the following is (cos m)^2?
A. .22
B. .11
C. 11.1
D. 1.11

Answer 1

cos(m) 2? wut

Answer 2

i fixed it @Untitled123

Answer 3

Do u mean 2*(cos m)^2 ?

Answer 4

nope its written exactly as the question was given to me.

Answer 5

@jim_thompson5910 do you understand this one?

Answer 6

use

(cos(m))^2 = ( 1 + cos(2m) )/2

Answer 7

i plugged it in my calculator and i got .987948

Answer 8

I got .9969 @jim_thompson5910

Answer 9

(cos(m))^2 = ( 1 + cos(2m) )/2


(cos(m))^2 = ( 1 + 0.11 )/2


(cos(m))^2 = ( 1.11 )/2


(cos(m))^2 = 0.555


So there has to be a typo somewhere

Answer 10

i see what I did. @jim_thompson5910

Answer 11

so would it be A or D? in the first part of the equation A was used but once you added it turned into D.. @jim_thompson5910

Answer 12

the answer is not in the choices, so like I said, there has to be a typo somewhere