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3 years ago

How to find the angle marked

Physics

1 answer:

Sedbober [7]3 years ago

4 0

#6). The tangent of an angle in a right triangle is

(opposite side) / (adjacent side) .

The side opposite the marked angle is 4cm.
The side adjacent to the marked angle is 12cm.

The tangent of the marked angle is (4cm / 12cm) = 1/3 .

The marked angle is the angle whose tangent is 1/3 .
You can find that online, or with your calculator, slide rule, Curta, or book.

#7). The cosine of an angle in a right triangle is

(adjacent side) / (hypotenuse) .

The side adjacent to the marked angle is 15m.
The hypotenuse is 19m.

The cosine of the marked angle is (15m / 19m) = about 0.78947...

The marked angle is the angle whose cosine is 0.78947... .
You can find that online, or with your calculator, slide rule, Curta, or book.

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