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Alexxandr [17]
3 years ago
7

. The ratio of three angles of a triangle is 1:2:3. Find the measurement ofthe angles.​

Mathematics
1 answer:
nydimaria [60]3 years ago
5 0

Answer:

Step-by-step explanation:

Sum of angles in a Δ= 180°

x + 2x +3x = 180

6x= 180

Divide both sides by 6

x=30

sooo x= 1×30= 30,   2x= 2×30= 60,   3x=3×30= 90

since 30+60+90= 180

∴the angles are 30°,60° and 90° respectively

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Which of the following sets of lengths can Sean use to make a right triangle?
Aleks [24]

Answer:

{8 cm, 15 cm, 17 cm}

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we know that

The length sides of a right triangle must satisfy the Pythagoras Theorem

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<u><em>Verify each case</em></u>

case 1) we have

{5 cm, 15 cm, 18 cm}

substitute in the formula

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case 2) we have

{6 cm, 12 cm, 16 cm}

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16^2=8^2+12^2

256=208 ----> is not true

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case 3) we have

{5 cm, 13 cm, 15 cm}

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15^2=5^2+13^2

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case 4) we have

{8 cm, 15 cm, 17 cm}

substitute in the formula

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