Ratios for sin a and cos a equation​

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Secant be and cf intersect at point d inside a what is the measure of cde

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex