Math, asked by phonestorageid007, 10 months ago


যদি ABC ত্রিভুজৰ angleA = angleB + angleC, দেখুওৱা যে ত্রিভুজটো সমকোণী।​

Answers

Answered by Anonymous
4

অ'ই তুমি অসমীয়া নেকি...............….....…....…

Let angle B=4x and angle C=5x.

Given, angle A=B+C=4x+5x=9x

We know that sum of angles in a triangle =180

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⇒9x+4x+5x=180

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⇒18x=180

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x=10

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Hence, angles are A=9x=90

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;B=4x=40

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;C=50

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