3 years ago

A triangle has a base of nine meters and a hight of 8 meters, what is the area of the triangle

Mathematics

2 answers:

Stolb23 [73]3 years ago

6 0

B- the area is 0.5xbasexheight

ANEK [815]3 years ago

6 0

B.36 square meters ( um I don’t know what else to put so I’m doing this)

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Answer:

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Step-by-step explanation:

Given: A plane is descending onto the runway with an angle of depression of 55°. Also, it has 2.8 miles to go before landing.

To find: current altitude of the plane

Solution:

Consider the attached image.

In ΔABC,

$\angle ACB=55^{\circ}$ (Alternate interior angles)

For any angle $\theta$ ,

$tan \theta$ = side opposite to angle/side adjacent to angle

$\tan C=\frac{AB}{BC}$

Put $\angle C=55^{\circ}\,,\,BC=2.8\,\,miles$

$AB=2.8\,\tan 55^{\circ}=3.999\approx 4\,\,miles$

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