Question

If A=30° and b:c=2:√3, show that B=90°

Answer 1

Step-by-step explanation:

b/c= sec30°=2/√3

c is hypotenuse as sec theta = h/b

so angle opposite to hypotenuse is of90°

Answer 2

Answer:

If the angles of Rt.triangle are 30: 60:90, the sides opposite them are in the ratio I: v3:2

LA=30,L C=60 LB = 90

LB = 90 proved