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Inverse Trigonometric Function
Inverse Trigonometric Function
Hard
Question
If cos
-1
x + cos
-1
y + cos
-1
z = π, then -
Options
A.
x
2
+ y
2
+ z
2
+ xyz = 0
B.
x
2
+ y
2
+ z
2
+ xyz = 1
C.
x
2
+ y
2
+ z
2
+ 2xyz = 0
D.
x
2
+ y
2
+ z
2
+ 2xyz = 1
Solution
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Inverse Trigonometric Function
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