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11 Aug 2025, 09:14
Kudos
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B
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The angles of a triangle are in the ratio 3 : 4 : 5. If the
greatest angle is C°, which of the following is true?
(A) C < 75 (B) 75 ≤ C < 90
(C) C = 90 (D) 90 < C < 120
greatest angle is C°, which of the following is true?
(A) C < 75 (B) 75 ≤ C < 90
(C) C = 90 (D) 90 < C < 120
26 Sep 2025, 20:38
Kudos
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let three angles be 3a , 4a, 5a
sum = 3a + 4a + 5a = 12a = 180 degrees
a =15 degrees
greatest angle C = 5*15 = 75 degrees.
hence option ( B)
sum = 3a + 4a + 5a = 12a = 180 degrees
a =15 degrees
greatest angle C = 5*15 = 75 degrees.
hence option ( B)
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