Use the fact that sin38°≈0.6157 to answer this question.
cos[blank]°≈0.6157
2 answers
90º - 38º
the "co-" in the cosine means "complement"
sin(x) = cos(90-x)
same for cot and csc.
sin(x) = cos(90-x)
same for cot and csc.
3 answers