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Question
একটি ত্রিভূজের কোণগুলোর অনুপাত ২ঃ৩ঃ৫ । এর বৃহত্তম কোণটি____
18ডিগ্রী
36ডিগ্রী
54ডিগ্রী
90ডিগ্রী
ANSWER : 4
Descrption
<pre> ধরি, কোণগুলো 2x, 3x এবং 5x ∴ 2x + 3x + 5x = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mn>180</mn><mo>°</mo></math> <math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><mn>10</mn><mi>x</mi><mo> = </mo><mn>180</mn><mo>°</mo><mspace linebreak = "newline"/><mo>.</mo><mo>'</mo><mo>.</mo><mo> </mo><mo> </mo><mi>x</mi><mo> = </mo><mn>18</mn><mo>°</mo></math> ∴ বৃহত্তম কোণটি = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mn>5</mn><mo>×</mo><mn>18</mn><mo>°</mo></math><math xmlns = "http://www.w3.org/1998/Math/MathML"><mo> = </mo><mn>90</mn><mo>°</mo></math> </pre>
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