In the diagram, the measure of angle 1 is (3x)°, and the measure of angle 2 is (12x)°.
what is the measure of angle 4?
36°
45°
135°
144°

Step-by-step explanation:

Step 1

Find the value of x

we know that

-----> by supplementary angles

we have

substitute and solve for x

Step 2

Find the measure of angle 4

we know that

-----> by vertical angles

we have

----->

therefore

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°

hope this is what you were asking for!

step-by-step explanation: