if cos 2 theta is equal to 0 determine determine determine determinant zero cos theta sin theta cos theta sin theta 0 sin theta cos

Hope i can you!

21/2 or 5/2

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?