Question

if AD=7√3 then find BC if B=30° C=60° D=90°​

Answer 1

Answer:

28

Explanation:

Tan30° = AD/BD

1/√3 = 7√3/BD => BD =7√3 × √3= 21cm

Tan60° = AD /CD

√3 = 7√3/CD => CD = 7√3/√3 = 7 cm

BC = BD + CD = 21 + 7 = 28cm