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GenaCL600 [577]
3 years ago
6

A right triangle (triangle 1) has measurements of a = 505 mm and b = 286 mm. What are the measurements for c, α, and β?

Mathematics
1 answer:
Nataly_w [17]3 years ago
7 0

see the attached figure to better understand the problem  

Step 1

<u>Find the value of c</u>

we know that

Applying the Pythagorean Theorem

c^{2} =a^{2}+b^{2}

we have

a=505\ mm

b=286\ mm

substitute the values in the formula

c^{2} =505^{2}+286^{2}

c^{2} =336,821

c=580.36\ mm  

Step 2

<u>Find the value of angle A (α)</u>

we know that

in the right triangle ABC

cos(A)=\frac{b}{c} \\ \\cos(A)=(286/580.36)\\ \\A=arc\ cos(286/580.36)\\ \\A=60.48\ degrees

Step 3

<u>Find the angle B (β)</u>

we know that

in the right triangle ABC

angle A and angle B are complementary angles

so

A+B=90

solve for B

B=90-A-------> B=90-60.48-----> B=29.52°

therefore

<u>the answers are</u>

a) the measure of side c is 580.36 mm

b) the measure of the angle α is 60.48°

c) the measure of the angle β is 29.52°

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