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21-05-2021
Mathematics

contestada

find AB when given angle B 64 degress angle C 75 degrese and side a 19

Respuesta :

21-05-2021

Answer:

about 28

Step-by-step explanation:

you have to use the sine rule = side you know * ( sin of angle opposing the side you want to know / sin of angle opposing the side you know)

AB = 19* (sin 75/ sin ( 180 -75-64) )

AB = 19 * ( sin 75 / sin 41) ≈ 27.9739...

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