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Artyom0805 [142]
3 years ago
8

Need help for geometry question

Mathematics
1 answer:
pickupchik [31]3 years ago
7 0

Answer:

Step-by-step explanation:

sin^-1 (21/67) = 18.27 degrees

√(67)^2 - (21)^2 = 63.62

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3 years ago
Calculate the length of ac
svlad2 [7]

Answer:

  12.1 cm

Step-by-step explanation:

Using the law of sines, we can find angle C. Then from the sum of angles, we can find angle B. The law of sines again will tell us the length AC.

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  C = arcsin((c/a)sin(A)) = arcsin(8.2/13.5·sin(81°)) ≈ 36.86°

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<em>Comment on the solution</em>

The problem can also be solved using the law of cosines. The equation is ...

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  b = 8.2·cos(81°) +√(13.5² -(8.2·sin(81°))²) . . . . . simplified a bit

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