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If Two Sides of a Triangle Are Unequal, Then the Angle Opposite to the Greater Side Is Greater Than Angle Opposite to the Smaller Side

The angles of...

Question

The angles of triangle are $20, x, 3 x$ find $x$

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Solution

The sum of angles of triangle are $180$
$\Rightarrow 20 + x + 3 x = 180 \Rightarrow 4 x = 160 \Rightarrow x = 40$

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If Two Sides of a Triangle Are Unequal, Then the Angle Opposite to the Greater Side Is Greater Than Angle Opposite to the Smaller Side

Standard IX Mathematics

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