on a scale drawling with the scale of 1 in to 5ft to aflagpole is 4 inches tall how tall is the actual flagpole

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i