I'm very confused, I don't know where to even start! Please help me!!

Answer/Step-by-step explanation:

✔️Using trigonometric ratio, find width of the rectangle, BD:

Thus:

Where,

Opposite = BD

Adjacent = 7 cm

Plug in the values

Multiply both sides by 7

✔️Using trigonometric ratio, find height of the rectangle, BF:

Thus:

Where,

Opposite = 6 cm

Adjacent = BF

Plug in the values

Rationalize

✔️Perimeter of rectangle BDEF:

Perimeter = 2(BD + BF)

Plug in the values

✔️Area of the rectangle BDEF:

Area = BD × BF

Plug in the values

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2

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°