1.what basic trigonometric identity would you use to verify that cot x sin x = cos x? .
a. cos^2x+sin^2x=1.
b. cot x= cosx/sinx.
c. cos x= 1/sec x.
d. sin x= 1/csc x.
2.what basic trigonometric identity would you use to verify that sin^2x+cos^2x/cosx= sec x? .
a. sin x=1/csc x.
b. 1+cot^2x=csc^2x.
c. cos^2x+sin^2x=1.
d. cos x= 1/sec x