Evaluate tan5xtan3xtan2x
tan5x-tan3x-tan2x
sin5x-sin3x-sin2xcos5x-cos3x-cos2x
0
None of these
Explanation for correct option
Solving the given expression
Given, tan5xtan3xtan2x
Considering, 2x=5x-3x
We take tan on both sides,
tan2x=tan(5x-3x)⇒tan2x=tan5x-tan3x1+tan5xtan3x[∵tan(A-B)=tanA-tanB1+tanAtanB]⇒tan2x(1+tan5xtan3x)=tan5x-tan3x⇒tan2x+tan2xtan5xtan3x=tan5x-tan3x
Simplifying further, we get:
∴tan5xtan3xtan2x=tan5x-tan3x-tan2x
Hence, the correct answer is Option (A).
Evaluate.