The difference between two angles is 190 and their sum is 8909 grades. Find the greater angle. [Grade=1100 part of rt. angle=(90100)0=0.90]
A
630
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B
350
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C
270
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D
540
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Solution
The correct option is D540 Let x be the greater angle Let y be the smaller angle Applying conditions, we get x+y=8909(0.90) x+y=890 ...(i) x−y=190 ...(ii) Adding equation (i) and (ii), we get 2x=1080 x=540 Hence, the greater angle is 540 Therefore, the answer is option D.