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Aleks [24]
3 years ago
7

Triangle ABC is a right triangle and cos(22.6o)=StartFraction b Over 13 EndFraction. Solve for b and round to the nearest whole

number. Triangle A B C is shown. Angle A C B is 90 degrees and angle C A B is 22.6 degrees. The length of hypotenuse A B is 13 centimeters, the length of A C is b, and the length of C B is a.
Mathematics
2 answers:
Art [367]3 years ago
8 0

Answer:

a = 5 and b = 12

Step-by-step explanation:

<u>Step 1: Find angle B</u>

<em>Angle C = 90°</em>

<em>Angle A = 22.6°</em>

<em>Angle B = B</em>

<em>All angles in a triangle are equal to 180°.</em>

Angle A + Angle B + Angle C = 180°

22.6 + 90 + B = 180°

B = 180 - 112.6

B = 67.4°

<u>Step 2: Find the value of side AC 'b'</u>

<em>Hypotenuse = 13</em>

<em>Adjacent = b</em>

<em>Angle A = 22.6°</em>

Cos (Angle) = Adjacent/Hypotenuse

Cos (22.6) = b/13

b = 12

<u>Step 3: Find the value of side CB 'a'</u>

<em>Hypotenuse = 13</em>

<em>Opposite = a</em>

<em>Angle A = 22.6°</em>

Sin (angle) = Opposite/Hypotenuse

Sin (22.6°) = a/13

a = 4.99 rounded off to 5

Therefore, the value of a=5 and b=12.

!!

Thepotemich [5.8K]3 years ago
6 0

Answer:

C just did the test

Step-by-step explanation:

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<h3>How to prove that ∠PQR is 90 degrees?</h3>

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The coordinates of the QR are given as:

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y = 3x - 2

The slope of the above line is

m1 = 3

Next, we calculate the slope (m2) of points Q and R.

So, we have:

m2 = (y2- y1)/(x2 - x1)

This gives

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Evaluate

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The slopes of perpendicular lines are opposite reciprocals.

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2 years ago
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3 years ago
The answer is 48 can someone explain how?
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Answer:

<h2>48</h2>

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(1)

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apple = 3

(2)

apple + apple × green_apple = 24   <em>substituite apple = 3</em>

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(3)

strawberry - bannana - banana = 0 → strawberry = 2banana

(4)

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2banana + banana + cherry = 24

3banana + cherry = 24

(5)

apple + banana - cherry = -1          <em>substitute apple = 3</em>

3 + banana - cherry = -1         <em>subtr3 from both sides</em>

banana - cherry = -4

Add both sides of (4) and (5)

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<u>+banana - cherry = -4       </u>

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Substitute to the last equation:

3 + 5 × 9 = 3 + 45 = 48

/USED PEMDAS/

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