The interior angle of the triangle are in ap in which the 1st term and common difference are equal find the measure of bigger angle if the smaller angle is thirty degree..
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Where a is the first term and the common difference that we can observe that difference between two consecutive terms are the same i.e. 'd'. 30 + 30 + d + 30 + 2d =180. 30, 60, 30 + 60 or 30, 60, 90. Hence, the greatest angle of the given triangle is 90∘ .
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9 = n
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