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I am facing problem in the folllowing maths sum. arc cos x + arc cos y + arc cos z = pi 0 Show that x 2 + y 2 + z 2 + 2xyz = 1. Please help me as soon as possible. My exam is tommorow. This question was repeated 3 times. Reply Fast.

I am facing problem in the folllowing maths sum. 
arc cos x + arc cos y + arc cos z = pi   0
 
Show that x2 + y2 + z2 + 2xyz = 1.
 
Please help me as soon as possible. My exam is tommorow. This question was repeated 3 times. Reply Fast.

Grade:12

1 Answers

Sourabh Singh IIT Patna
askIITians Faculty 2104 Points
7 years ago
hii
PFA
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