Asked by Simran

If cos degree equals to 0.8641
What is Sin degree?


I have no idea how to find this.
Please help me. Thank you
Answered by bobpursley
cos^2+sin^2=1

sinDegree=sqrt(1-cos^2degree)
Answered by Reiny
I recognize .8641 as an approximation to √3/2
if cos x = √3/2
x = 30°
sin30° = 1/2 or .5

using your .8641
sinx = .5033