Question

if sin x=.21 what is cos x?

Answer 1

use sinx^x+cosx^+1=0

Answer 2

\[sinx^2+cosx^2+1=0\]

Answer 3

this is hard..im bad at trig

Answer 4

i dont get it..

Answer 5

\[cosx^2=1-sinx^2\]
\[cosx^2=1-(0.21)^2\]
\[cosx^2=1-0.0441\]
\[cosx^2=0.9559\]
take square root both sides
\[cosx=0.977\]

Answer 6

do u understandd? if yes please click on best answer.

Answer 7

thankks:)

Answer 8

thankks:)

Answer 9

u r welcome always.