Use trig identities to verify this expression:
((1-tan^2(x))/(sec^2(x))=cos(2x).

See below

Step-by-step explanation:

Verify the expression:

((1-tan^2(x))/(sec^2(x))=cos(2x)

Done

hi,

i'm 75% sure the answer is 1,1 to both lines.

have a great day

c: y > - 1/6x + 1

step-by-step explanation:

dashed line - meaning this < or > also not equal

solid line - meaning this < or > also equal

your answer is c because y > means up & it's shaded up, but y < means down

hope this ! : )