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Prove that tan 70^(@) = "tan " 20^(@) ...

Prove that `tan 70^(@) = "tan " 20^(@) + 2"tan " 50^(@)`

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To prove that \( \tan 70^\circ = \tan 20^\circ + 2\tan 50^\circ \), we will start with the left-hand side (LHS) and manipulate it to show that it equals the right-hand side (RHS). ### Step 1: Write LHS We start with the left-hand side: \[ \tan 70^\circ \] ...
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