5/9
arccos 5/9 is quite another thing, it is equal to 56.25 deg
if cos Q=5/9, find 5/9
2 answers
cos(Q)=5/9
cos inverse both sides
cos^-1(cos(Q))=cos^-1(5/9)
cos^-1(cos(Q))=Q, based on inverse properity
Q=cos^-1(5/9)
cos inverse both sides
cos^-1(cos(Q))=cos^-1(5/9)
cos^-1(cos(Q))=Q, based on inverse properity
Q=cos^-1(5/9)
1 answer