CH2 Could someone help me with these Use the Cofunction Theo

CH2

Could someone help me with these?

Use the Cofunction Theorem to fill in the blank so that the expression becomes a true statement. sin 45degree = cos_______degree Simplify the expression by first substituting values from the table of exact values and then simplifying the resulting expression. 8 sin 60degree______Find the exact value. csc 60degree 1.155

Solution

1)sin = cos (90^o- )

sin45^o = cos (90^o-45^o )

sin45^o = cos45^o

2)8sin60⁰

=8*(3)_/2

=43

3)csc60^o

=2_/3

=(23)_/3