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Published byHillary Cameron Modified over 7 years ago

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Bellringer Angle A (or θ) = a = 1, b =, and c = 2

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Solving Right Triangles Section 5.5

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Definitions Sine - the ratio of the length of the side opposite an angle to the length of the hypotenuse Cosine – the ratio of the length of the side adjacent an angle to the length of the hypotenuse Tangent – the ratio of the length of the side opposite of an angle to the length of the side adjacent to that angle

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Ratios These ratios are the same for every triangle The sin(50°) is the same ratio regardless of the size of the triangle, this is what lets us solve for all sides and angles of a triangle

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Triangles We use capital letters (A, B, C) to label angles And we use lower-case letters (a, b, c) to label sides

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Solving Right Triangles (pg. 270, ex. #2) Solve right triangle ΔABC. (Nearest degree and nearest tenth.) A = 49°a = 7 B = b = C = 90 °c =

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Solving Right Triangles (pg. 270, ex. #3) Solve right triangle ΔABC. (Nearest degree and nearest tenth.) A = a = 8 B = b = C = 90 °c = 14

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