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प्रश्न
Find the complement of: `2/5 "of" 210^circ`
उत्तर
We know that two angles are called complementary when their sum is 90°. Now
`2/5 "of" 210^circ`
`= 2/5 xx 210^circ = 2 xx 42^circ = 84^circ`
∴ Its complement will be = 90° - 84° = 6°
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