Question

In the given triangle, the length of AB is:

पर्याय

• 160 cm

• 120 cm

• 60 cm

• 40 cm

Answer 1

40 cm

Explanation:

In right ΔABC (∠B = 90°), AC = 80 cm and ∠C = 60°.

So,

AB = AC × cos 60°

= 80 × `1/2`

= 40 cm