Question

what is the relationship between law of sine and cosine​

Answer 1

Answer:

The cosine rule relates the cosine of an angle of a triangle to the sides of the triangle. With its help , the angles of a triangle can be determined , if all its sides are known.

The sine rules gives the ratio of the sine of two angles of a triangle, which equals to the ratio of the corresponding opposite sides. With its help we can determine any one of these four elements, if other three are known.

Explanation:

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Answer 2

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The law of sines (i.e. the “sine law”) does not let you do that. Instead it tells you that the sines of the angles are proportional to the lengths of the sides opposite those angles .

The law of cosines (also called “cosine law”) tells you how to find one side of a triangle if you know the other two sides and the angle between

them•

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