In the diagram below point A represents the position of a boy standing on level ground. B represents the position of a bird on the top of a building. The boy is 5m from the foot of the building and the bird is 8m above the ground Calculate the angle of elevation of B from A​

38.7 degree (approx)

Step-by-step explanation:

combine all like terms then its just a 2 step equation

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629