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What are some examples of complementary angles?

Answer 1

Noah Atkinson

Examples include #40°# and #50°#, #20°# and #70°#, and #45°# and #45°#.

Complementary angles add up to #90°#.

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Answer 2

James Atkins

Examples of complementary angles include:

A (30^\circ) angle and a (60^\circ) angle.
A (45^\circ) angle and a (45^\circ) angle.
A (20^\circ) angle and a (70^\circ) angle.
A (10^\circ) angle and an (80^\circ) angle.
A (90^\circ) angle and a (0^\circ) angle.

These pairs of angles sum up to (90^\circ), making them complementary.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.