ashleyrogersarogers ashleyrogersarogers

25-02-2019
Mathematics

contestada

If b = 9 and c = 13, what is the measure of ∠A? (round to the nearest tenth of a degree)

A) 34.7°

B) 41.2°

C) 46.2°

D) 49.5°

E) 55.3°

If b 9 and c 13 what is the measure of A round to the nearest tenth of a degreeA 347 B 412 C 462 D 495 E 553 class=

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

25-02-2019

Answer:

C) 46.2°

Step-by-step explanation:

cos theta = adjacent side/ hypotenuse

cos A = b/c

cos A = 9/13

Taking the inverse cosine of each side

cos^-1 (cosA) = cos^-1 (9/13)

A = 46.18693854

A = 46.2 degrees

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sierravick123owr441 sierravick123owr441

25-02-2019

The answer to this question is C

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