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MAVERICK [17]
3 years ago
15

PLEASE HELP!!!!Math Homework

Mathematics
1 answer:
Finger [1]3 years ago
8 0

You need to add the second number and the answer to get your answer

A. 2

B.6

D.5

F.4

G. 3


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3 years ago
Find cos B exactly if a = 15, b = 11, and angle Cis a right angle
astra-53 [7]

Answer:

Final answer is \cos\left(B\right)=\frac{15}{\sqrt{346}} which is the last choice.

Step-by-step explanation:

In triangle ABC, we have been given a = 15, b = 11, and angle C is a right angle.

Now using those values, we need to find the exact value of cos B.

Apply Pythagorean formula:

AB^2=AC^2+BC^2

AB^2=11^2+15^2

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Now apply formula of cos

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\cos\left(B\right)=\frac{15}{\sqrt{346}}

Hence final answer is \cos\left(B\right)=\frac{15}{\sqrt{346}}


3 0
3 years ago
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