In a pair of complementary angles, if one angle is decreased then other angle must so that both the angles still remains complementary.

Increase

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Decrease

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Equal

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Remains same

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Solution

The correct option is A Increase
Pair of angles $∠$ A and $∠$ B are complementary if,
$∠$ A + $∠$ B = $90^{\circ}$ .
If $∠$ A is decreased then in order to maintain sum = $90^{\circ}$ , other angle must increase.

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In a pair of complementary angles, if one angle is decreased then other angle must so that both the angles still remains complementary.

The correct option is A IncreasePair of angles ∠A and ∠B are complementary if, ∠A +∠B = 90∘. If ∠A is decreased then in order to maintain sum = 90∘, other angle must increase.

The correct option is A Increase
Pair of angles $∠$ A and $∠$ B are complementary if,
$∠$ A + $∠$ B = $90^{\circ}$ .
If $∠$ A is decreased then in order to maintain sum = $90^{\circ}$ , other angle must increase.