1. The approximate value of sin 31°...
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1. The approximate value of sin 31° is – (a) > 0.5 (b) > 0.6 (c) <0.5 (d) <0.4

JEE/Engineering Exams
Maths
Solution
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( sin 30 Rightarrow frac{1}{2} Rightarrow 0.5 ) ( sin 31 ) ( sin 45 Rightarrow frac{1}{sqrt{2}} Rightarrow frac{1}{14} Rightarrow 0.7 ) ( sin 31 rightarrow(70.5) )
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