A person of height 1.6m up to the eye level is standing at a point 2m away from the bank of the river and found an angle of elevation of 30°. find the width of the river.

Step-by-step explanation:

tan30° = Height of person / (Distance away from river bank + river's width) = 1/√3.

Therefore 1.6m / (2m + x) = 1/√3

By cross multiplication, 1.6√3 = 2 + x.

Hence, x ≈ 0.77m.

10000

step-by-step explanation: divide by 2,

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step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or