Cos(arcsin5/13)

Question

Cos(arcsin5/13)

Answer 1

cos(arcsin5/13)=12/13

Answer 2

cos(arcsin5/13)

cos(arccos5/13)=5/13

 

sin(x)=sqrt(1-(5/13)^2)=sqrt(1-25/169)=sqrt(144/169)=12/13

 

cos(arcsin5/13)=12/13