lrnegrita8 lrnegrita8

26-04-2018
Mathematics

contestada

HELP
Find the measure of a.

(photo)

a) 3

b) 16

c) 6

d) 8

HELP Find the measure of a photo a 3 b 16 c 6 d 8 class=

Respuesta :

sqdancefan sqdancefan

03-01-2019

Answer:

c) 6

Step-by-step explanation:

This is a straight-forward application of the Law of Cosines:

... a² = b² + c² -2bc·cos(A)

... a² = 8² +11² -2·8·11·cos(32.2°) ≈ 64 +121 -176·0.8462

... a² ≈ 36.07000

... a ≈ 6.00583

The best choice is c) 6.

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