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quadrilateral abcd is an isosceles trapezoid. ac = 12, ab = 6, bc = 10

what is ad?

what is db?

Answers:

AD = 10 units

BD = 12 units

Explanation:

1- getting AD:

In an isosceles triangle, the two non-parallel sides are equal.

It is given that trapezium ABCD is isosceles which means that AD = BC

We are given that:

BC = 10 units

Therefore:

AD = BC = 10 units

2- getting DB:

In an isosceles trapezium, the diagonals are congruent

Since the given trapezium is isosceles and AC and BD are its diagonals, therefore:

AC = BD

We are given that:

AC = 12 units

Therefore:

BD = AC = 12 units

Hope this helps :)

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°