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What is the supplementary angle of $102^{\circ}$ ?

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180^{\circ}

90^{\circ}

78^{\circ}

60^{\circ}

answer is C.

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Detailed Solution

We have been given an angle of 102o.
As we know, the sum of supplementary angles if

180^{0}

.
Supplementary angle of

102^{\circ}

,
Let the supplementary angle be ‘x’,

\Rightarrow x + 102^{\circ} = 180^{\circ}

\Rightarrow x = 180^{\circ} - 102^{\circ}

\Rightarrow x = 78^{\circ}

Therefore, the supplementary angle of 102o is 78o.
Hence, option 3 is correct.

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