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Find the complement of $(90^{o} - a)$ .

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- a

90^{o} + a

90^{o} - a

a

answer is D.

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Detailed Solution

We need to find the complement of

(90^{o} - a)

.
Let constant y be a complement.
When the sum of two angles is 90°, it is said to be a complementary angle.
Add the constant y,

{\Rightarrow 90}^{\circ} - a + y

The sum of two angles is equal to 90°.

{\Rightarrow 90}^{\circ} - a + y = 90^{\circ}

\Rightarrow y = a

Hence, the complement of

(90^{o} - a)

a

.
Therefore, option 4 is correct.

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