Does anyone know any good app or places that I can use for studying any subject? I've done Kahn Academy, Quizlet, Kahoot, and some other ones but I wanna try something new.

have you tryed quizziz it’s kinda like a game but it’s fun or blooklet

Step-by-step explanation:

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°