Question

6)If ∆ABC is a right angled triangle with angle B= 90° ,angle A=30°, AC=18, then AB will be (1 mark) 1 point 5 6 7 9

Answer 1

Answer:

AB=18cm

Step-by-step explanation:

given- AC=18

angle B =90°

angle A=30°

Now,

AB=perpendicular

BC=base

AC=hypotenus

sin90°=P/H

sin90°=AB/AC

(sin90°=1)

1=AB/AC

1=AB/18

(AC=18(given))

AB=18cm