For what values is the statement true? sin(x+20)°=cos(y−10)°

What is the equation of the graph below? y=sec(x)-4

Find dy/dx using implicit differentiation ln(20+e^xy)=y

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.