$\"\"$

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Observe the Right angle triangle.

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Length of opposite side to $\"\"$ is $\"\"$ .

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Length of adjacent side to $\"\"$ is $\"\"$ .

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Pythagorean theorem : $\"\"$

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Length of the hypotenuse is $\"\"$ .

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Trigonometric function : $\"\"$ .

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Trigonometric function : $\"\"$ .

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$\"\"$

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Trigonometric function : $\"\"$ .

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$\"\"$

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Trigonometric function : $\"\"$ .

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$\"\"$

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Trigonometric function : $\"\"$ .

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$\"\"$

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Trigonometric function : $\"\"$ .

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$\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .