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Sine, Cosine and Tangent of Acute Angles in Right-angled Triangles - Part 1
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Hypotenuse
The side opposite to a right angle in a right-angled triangle
Right angle
Hypotenuse
The longest side of a right-angled triangle
Opposite side
Acute angle
Adjacent side
The sine of an acute angle in a right-angled triangle
The ratio of the opposite side to the hypotenuse
The cosine of an acute angle in a right-angled triangle
The ratio of the adjacent side to the hypotenuse
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Sine, Cosine and Tangent of Acute Angles in Right-angled Triangles - Part 1
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