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what is the measure of angle r in triangle QRS shown below, given r=10 q=20 and Q=100 round answer to the nearest tenth

HELP PLEASE

Respuesta :

mhanifa

Answer:

  • 29.3°

Step-by-step explanation:

Given triangle QRS with:

  • ∠Q = 100° is opposite to q = 20
  • ∠R = ? is opposite to r = 10

Use the law of sines to solve:

  • sin 100 deg / 20 = sin x / 10
  • 0.98 / 2 = sin ∠R  (rounded)
  • sin x∠R = 0.49
  • ∠R = arcsin 0.49
  • ∠R = 29.3° (rounded)

nickstevens665

Answer:

29.5

Step-by-step explanation:

original had 29.3 which is not an option. 29.5 is right.