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2 years ago

9

The lengths of three sides of a triangle are 10 centimeters, 11 centimeters, and 13 centimeters. Find the measure of the smalles

t angle of the triangle.

1 answer:

SashulF [63]2 years ago

5 0

Answer:

48.4°

Step-by-step explanation:

The smallest angle is opposite to the smallest side.

<u>Use the law of cosines to find the angle opposite to side with the length of 10 cm:</u>

cos A = (b² + c² - a²)/(2bc)

cos x = (11² + 13² - 10²)/(2*11*13)
cos x = 190/286
cos x = 0.664 (rounded)
x = arccos (0.664)
x = 48.4° (rounded)

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During the first four months of the year, Jack earned $1270, $1150, $870 and $1450 If Jack must have an average salary of at lea

tia_tia [17]

Answer:

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Step-by-step explanation:

There are a whole class of questions that rely on the method to this one.

First add up what you know

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Now add on the 5th month (which you don't know. Call it x)

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Solution

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3 years ago

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3 years ago

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