Question 16
Make x the subject of the formula
y = ax2

PLZ HELP MEEE​

x = ±

Step-by-step explanation:

Given

y = ax² ( divide both sides by a to isolate x² )

= x² ( take the square root of both sides )

x = ±

in this right triangle, we are given an angle and the adjacent side of the angle. now we have to find for the length of the opposite side. the formula that relates these 3 variables is the tan function which states that:

tan θ = opposite side / adjacent side

where opposite side is the height of the sail

substituting the values into the formula:
tan (40) = height / 2

rearranging in terms of height:

height = 2 * tan (40)

since tan θ = 1 / cot θ, therefore:

height = 2 / cot (40)

answer:

d. 2 divided by cot 40 degrees