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3 years ago

Jkl;jkl;jjjjjjjjjjjjjjjjjjjjj

Mathematics

2 answers:

nika2105 [10]3 years ago

8 0

Answer:

98-40 $\sqrt{6}$

Step-by-step explanation:

stepladder [879]3 years ago

6 0

Answer:

-2

Step-by-step explanation:

Hopefully this helps you

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ΔABC has three sides with these lengths: AB = 9, BC = 40, and CA = 41. What is the value of cos C?

kotykmax [81]

Answer:

$cos(C) =\frac{40}{41}\\\\cos(C)=0.976$

Step-by-step explanation:

To find the $cos (C)$ we must use the cosine theorem.

The cosine theorem says that:

$c^2 = a^2 +b^2 -2abcos(C)$

In this case:

$c=AB = 9$

$b=CA = 41$

$a=BC = 40$

$9^2 = 40^2 +41^2 -2(40)*(41)cos(C)$

$9^2- 40^2- 41^2 =-2(40)*(41)cos(C)$

$cos(C) = -\frac{9^2- 40^2- 41^2}{2(40)*(41)}$

$cos(C) =\frac{40}{41}\\\\cos(C)=0.976$

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What is the measure of the largest angle on the triangle!

nalin [4]

Okay, so as you may know the inside angles of a triangle always add up to 180! so you must first find x, so that means add up all equations to find x. your answer is 41

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3 years ago

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Wilber can mow 500 ft2 yard in 10 minutes. If he does not slow down, how long will it take Wilber to mow his neighbors yard that

NeTakaya

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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