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Answer:
Step-by-step explanation:
Assuming that the tree is perpendicular with the ground, we can use trigonometric ratios to find the height of the tree.
First, let's draw a diagram. From the point on the ground to the base, it is 120 feet and forms a 30 degree angle. We want to find the height of the tree, which is labeled h. (The diagram is attached and not to scale).
Next, recall the ratios.
- sin(θ)= opposite/hypotenuse
- cos(θ)= adjacent/hypotenuse
- tan(θ)= opposite/adjacent
We see that the height is opposite the 30 degree angle and 120 is adjacent.
- opposite=h
- adjacent=120
Since we are given opposite and adjacent, we must use tangent.
Substitute the values in.
We are solving for h, so we must isolate it. It is being divided by 120 and the inverse of division is multiplication. Multiply both sides by 120.
Round to the hundredth place (2 decimal places). The 2 in the thousandth place tells us to leave the 8 in the hundredth place.
The height of the tree is about <u>69.28 feet.</u>
The required equation of a line perpendicular is y = x + 5
Given the equation y = -x + 2, the slope of the line is -1
- The slope of the line perpendicular will be m -1/-1 = 1.
- Given the point (-1.5, 3.5)
Substitute the slope and the point into the point-slope form of the equation expressed as:
Hence the required equation of a line perpendicular is y = x + 5
Learn more on equation of a line here: brainly.com/question/19417700