One of the shorter two sides in a right-angled triangle. The side adjacent or next to the given angle

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hypoteneuse

The longest side of a right-angled triangle. The side opposite the right-angle

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opposite

one of the shorter two sides in a right-angled triangle. The side opposite the given angle.

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Trigonometric functions

Functions of angles. The main trigonometric functions are sine, cosine and tangent, as well as their reciprocal. These functions relate the angles in the triangle to the lengths of its sides. Can also be described as ratios of two sides of a triangle

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SOH

For a right angled triangle with a given angle A, opposite side a and hypoteneuse c, sine(A)=a/c

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CAH

For a right angled triangle with a given angle A, adjacent side b and hypoteneuse c, cosine(A)=b/c

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TOA

For a right angled triangle with a given angle A, opposite side a and adjacent side b, tangent(A)=sine(A)/cosine(A)=a/b

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Sine rule

for a triangle where the given/desired information includes two side lengths and two angles, a/Sin(A)=b/Sin(b)=c/Sin(C), where angle A is opposite to side length a

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Cosine rule

For a triangle where the given/desired information includes 3 sides and 1 angle, a^2=b^2+c^2-2bcCos(A), where a, b and c are side lengths and A is the angle opposite to a

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Other cards in this set

Card 2

Front

The longest side of a right-angled triangle. The side opposite the right-angle

Back

hypoteneuse

Card 3

Front

one of the shorter two sides in a right-angled triangle. The side opposite the given angle.

Back

Card 4

Front

Functions of angles. The main trigonometric functions are sine, cosine and tangent, as well as their reciprocal. These functions relate the angles in the triangle to the lengths of its sides. Can also be described as ratios of two sides of a triangle

Back

Card 5

Front

For a right angled triangle with a given angle A, opposite side a and hypoteneuse c, sine(A)=a/c

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