Question

Trigonometry Maths of std 10​

Answer 1

Answer:

Trigonometry (from Greek trigōnon, "triangle" and metron, "measure") is a branch of mathematics that studies relationships between side lengths and angles of triangles. The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical studies.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

multiply and divide lhs with cotΦ-1

and rhs with 1-√3