HW007 Problem 2 Previous Problem List Next 1 point simplity

HW007: Problem 2 Previous Problem List Next (1 point) simplity the expression as much as possible cos (t)-1 help (formulas) sin(t) Preview My Answers Submit Answers You have attempted this problem 0 times You have unlimited attempts remaining Email instrucior

Solution

2)[cos²t -1]/sint

sin²p+cos²p=1 is indentity =>cos²p-1= -sin²p

=[-sin²t]/sint

==-sint

4)sin =y/z

sin =y/4

=>y=4sin

+ +90=180

=180- -90

=90-

cos =cos(90- )

cos= sin

16+y²=16+(4sin )²

16+y²=16+16(sin )²

16+y²=16(1+(sin )²)