Question:
If $ cos^{-1}x+ cos^{-1}y+cos^{-1}z = 3 \pi$ then $ x(y+z) + y(x+z) + z(x+y) $equals to
If $ cos^{-1}x+ cos^{-1}y+cos^{-1}z = 3 \pi$ then $ x(y+z) + y(x+z) + z(x+y) $equals to
Updated On: Apr 26, 2024
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The Correct Option is C
Solution and Explanation
The correct answer is Option (C) : 6
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