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15 June, 11:29

How to find length of a triangle given one side and angle

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  1. 15 June, 11:54
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    Use trigonometric ratio

    Step-by-step explanation:

    Since it is one side and angle of the triangle that is given, it is assumed that the triangle is a right-angled triangle

    To solve for one of the two unknown lengths, use trigonometric ratio

    There are 3 basic trigonometric ratio namely Sine (sin), Cosine (cos) and Tangent (tan)

    Sine of the angle given = opposite side : hypotenuse side

    Cosine of the angle given = adjacent side : hypotenuse side

    Tangent of the angle given = opposite side : adjacent side

    Assuming the length given is the hypotenuse side and the angle is inclined to the horizontal

    To find the opposite side of the triangle, multiply the hypotenuse side by the sine of the angle given
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