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dolphi86 [110]
3 years ago
5

For this right triangle, what is the cosine of angle C?

Mathematics
1 answer:
ollegr [7]3 years ago
3 0

Answer:

A  cos C = 12/13

Step-by-step explanation:

cos theta = adjacent side/ hypotenuse

cos C = BC/AC

But we don't know BC, but we can find it using the Pythagorean theorem

a^2 +b^2 = c^2

5^2 +BC^2 = 13^2

25 + BC ^2 =169

Subtract 25 from each side

BC^2 = 169-25

BC ^2 = 144

Taking the square root of each side

BC =12

cos C = 12/13

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Flauer [41]

Answer:

16°F

Step-by-step explanation:

15 + x = 31

x = 31 -15

x = 16

4 0
3 years ago
Steve wants to buy a new music player. The player he wants costs $279.95. The city he lives charges a 5% sales tax, so for every
Yakvenalex [24]

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6 0
3 years ago
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Eva8 [605]

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8 0
3 years ago
Choose the axiom that allows x(10) to be written 10x.
Alina [70]
I think the correct answer from the choices listed above is the last option. The axiom that allows x(10) to be written 10x would be the commutative property of multiplication. It <span>states that numbers can be added or multiplied in any order. Hope this answers the question. Have a nice day.</span>
6 0
3 years ago
Read 2 more answers
HELP PLEASE! I WILL GIVE BRAINLIEST
rusak2 [61]

Answer:

13.89

Step-by-step explanation:

A^2+B^2=C^2

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193 = C^2

193 square root = 13.89

6 0
3 years ago
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