Identify the identity function: f(x) = 5 and f(x) = x​

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?