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anonymous
 one year ago
~*~*~help please!! 10 points n medal!!~*~*~
Find the measure of angle A (image below). Round the answer to the nearest tenth.
A.
49.5°
B.
53.1°
C.
63.4°
D.
66.4°
anonymous
 one year ago
~*~*~help please!! 10 points n medal!!~*~*~ Find the measure of angle A (image below). Round the answer to the nearest tenth. A. 49.5° B. 53.1° C. 63.4° D. 66.4°

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misty1212
 one year ago
Best ResponseYou've already chosen the best response.1is it a law of sines question? or law of cosines?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0cosines! my computer is whack and notloading up anything

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1you got all 3 sides labelled?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0there we go! thank you!

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\[4^2=2^2+5^22\times 5\times \cos(A)\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1so \[16=2910\cos(A)\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1first we get \(\cos(A)\) by itself, then A

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\[\cos(A)=\frac{13}{10}=1.3\]hmm made a mistake somewhere

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hey sorry, i dont have a calculator, give me a minuet to look

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\[2\times2\times 5=20\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\[4^2=2^2+5^22\times 5\times2\times \cos(A)\]\[16=2920\cos(A)\] so \[\cos(A)=\frac{13}{20}=.65\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\[A=\cos^{1}(.65)\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1look at the degree answer since your answers are in degrees

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i am unsure of how to get the degree! im sorry

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1look at the link i sent it is right there

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1i typed in \(\arccos(.65)\) in to wolfram, it gives the answer in radians and also in degrees

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\[\color\magenta\heartsuit\]
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