What is sin, tan, and sec

Those are functions on a calculator.  Mostly used for Trigonometry.

Step-by-step explanation:

The tangent of x is defined to be its sine divided by its cosine: ... The cotangent of x is defined to be the cosine of x divided by the sine of x: cot x = cos x sin x . The secant of x is 1 divided by the cosine of x: sec x = 1 cos x , and the cosecant of x is defined to be 1 divided by the sine of x: csc x = 1 sin x .

Step-by-step explanation: Mark me Brainliest

what are the options? ?

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.