Verify the identity:
cos^2x+cos^2xtan^2x=sec^2x-tan^2x

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

idc

step-by-step explanation:

idk

6 meters

step-by-step explanation:

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1