In the figure below, find the length of side AB
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Given - AB = 20 metres
Angle c = 30°
Find - Length AB
Solution - We will use trigonometry values to find the length AB. As per the fact, sin theta = perpendicular/hypotenuse.
As per the given figure, perpendicular is AB and hypotenuse is AC. We also know sin 30° has the value 1/2.
Keeping the values to find the length of AB.
sin 30° = AB/AC
1/2 = AB/20
AB = 20/2
AB = 10 metres.
Hence, the length of AB = 10 metres.
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