Academic Detention #2

For my second Academic Detention blog ill explain two more things

1st: Related RAtes

1. Identify all variables and equations
2. identify what you are looking for
3. make a sketch and label
4.write an equation involving your variables
5. take the derivative with respect to time
6. substitute in derivative and solve

Ex: The variable x and y are differentiable functions of t and are related by the equation y=2x^3-x+4 when x=2 (dy/dt)=-1 Find (dy/dt) when x=2

(dy/dt)=6x^2(dy/dt)-(dy/dt)
=6(2)^2(-1)-(-1)

(dy/dt)=-23

Another problem i have and still have is Angle of elevation i don't know where my problem is i think its just starting the problem thats really hard for me so if someone can help with that thanks.