Question

If b = 4cm, angle A = 45 degrees, angle B = 30 degrees, then a=

Answer 1

Answer:

∠A : ∠B : ∠C = a : b : c

given ,

b = 4 cm

∠A = 45°

∠C = 30°

45 : ∠B : 30 = a : b : c

45 / a = 30 / c

a / c = 45 / 30

       = 3 / 2

a = 3 cm

c = 2 cm

b = 4 cm

Hence , a = 3 cm

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