Question

in ∆abc, angle b =90°, angle a=30°, ac=14 then find bc .​

Answer 1

Answer:

bc = 28

Step-by-step explanation:

given, in ∆abc, ∠ b =90°, ∠ a=30°, ac=14

by using sine rule,

bc / sin ∠a = ac / sin ∠b = ab / sin ∠c

now, bc / sin ∠a = ac / sin ∠b

put the values-

bc / sin 30° = 14 / sin 90°

bc / (1/2) = 14 / 1

bc = 14 * 2

bc = 28