ellamai16 ellamai16
  • 14-01-2019
  • Mathematics
contestada

Solve the right triangle ABC with right angle C if B = 30° and c = 10.
































Solve the right triangle ABC with right angle C if B 30 and c 10 class=

Respuesta :

GodlyGamer8239
GodlyGamer8239 GodlyGamer8239
  • 16-01-2019

Step-by-step explanation:

Answer:


Last choice is correct.


Step-by-step explanation:


Given that ∠C=90°, ∠B=30°, c=10


We know that sum of all angles in a triangle is 180 degree.


∠A+∠B+∠C=180°


∠A+∠30°+∠90°=180°


∠A+∠120°=180°


∠A=60°


Now we can use sin or cos whichever applicable to find missing sides


2b=10


b=5


Similarly


a=8.6602


Hence last choice is correct.

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