tanAtan(60°+A)tan(60°-A)=tan3A
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Concept
Trigonometry could be a branch of mathematics that studies relationships between side lengths and angles of triangles.
Given
The given expression is.
Find
We have to prove the given expression.
Solution
We will prove the given expression by taking LHS.
We will substitute , we get
Further, we are going to use the identity and , we get
As we know, and .
Now, we are going to use the identity
Further, we are going to use the identity and
Therefore,
Hence, the given expression is proved.
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