Question

find the value of x (AC) if angle BAC = 30° , BC =20 cm​

Answer 1

Answer:

40cm

Step-by-step explanation:

1:2:√3

30:90:60

by this

• 1 equal to BC And 20 cm
• so 2 equal to 40 cm (ac)
• simple

Answer 2

Answer:

40 cm

Step-by-step explanation:

Given,

Angle BAC = 30°

BC = 20cm

AC = x cm

Find AC which is equals to x cm.

So,by taking Trigonometry Formula,

Sin a° = perpendicular/Hypotheses

Therefore,

=> Sin 30° = 20 cm /x cm

Since, Sin 30° = 1/2

Therefore,

=> 1/2 = 20/x

=> x = 40 cm