qwerty1234321
if sin x=.21 what is cos x?



This Question is Closed

muhammad9t5
Best Response
You've already chosen the best response.
1
use sinx^x+cosx^+1=0

muhammad9t5
Best Response
You've already chosen the best response.
1
\[sinx^2+cosx^2+1=0\]

qwerty1234321
Best Response
You've already chosen the best response.
0
this is hard..im bad at trig

qwerty1234321
Best Response
You've already chosen the best response.
0
i dont get it..

muhammad9t5
Best Response
You've already chosen the best response.
1
\[cosx^2=1sinx^2\]
\[cosx^2=1(0.21)^2\]
\[cosx^2=10.0441\]
\[cosx^2=0.9559\]
take square root both sides
\[cosx=0.977\]

muhammad9t5
Best Response
You've already chosen the best response.
1
do u understandd? if yes please click on best answer.

qwerty1234321
Best Response
You've already chosen the best response.
0
thankks:)

qwerty1234321
Best Response
You've already chosen the best response.
0
thankks:)

muhammad9t5
Best Response
You've already chosen the best response.
1
u r welcome always.