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06-07-2018
Mathematics

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In (triangle symbol)ABC, (angle symbol)C is a right angle. Find the remaining sides and angles. Round your answers to the nearest tenth. Show your work.

a =3, c =19

In triangle symbolABC angle symbolC is a right angle Find the remaining sides and angles Round your answers to the nearest tenth Show your work a 3 c 19 class=

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hrhpink hrhpink

06-07-2018

Use the Pythagorean Theorem.

a² + b² = c²

3² + b² = 19²

9 + b² = 361

b² = 352

b = 4√11

Now, solve for the remaining angles by using the trigonometric ratios:

Sine = opposite/hypotenuse

sin(A)= 3/19

sininverse(3/19) = 9.1 = angle A

180-9.1-90 = 80.9 = angle B

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