In a survey work, three independent angles X, Y and Z were observed with weights WX, WY, WZ, respectively. The weight of the sum of angles X, Y and Z is given by:

Question

TuteeHUB · Accepted Answer

$\left( {\frac{1}{{{W_X}}} + \frac{1}{{{W_Y}}} + \frac{1}{{{W_Z}}}} \right)$

TuteeHUB · Answer

$\frac{1}{{\left( {\frac{1}{{{W_X}}} + \frac{1}{{{W_Y}}} + \frac{1}{{{W_Z}}}} \right)}}$

TuteeHUB · Answer

${W_X} + {W_Y} + {W_Z}$

TuteeHUB · Answer

$W_X^2 + W_Y^2 + W_Z^2$

1.	In a survey work, three independent angles X, Y and Z were observed with weights WX, WY, WZ, respectively. The weight of the sum of angles X, Y and Z is given by:
A.	\(\frac{1}{{\left( {\frac{1}{{{W_X}}} + \frac{1}{{{W_Y}}} + \frac{1}{{{W_Z}}}} \right)}}\)
B.	\(\left( {\frac{1}{{{W_X}}} + \frac{1}{{{W_Y}}} + \frac{1}{{{W_Z}}}} \right)\)
C.	\({W_X} + {W_Y} + {W_Z}\)
D.	\(W_X^2 + W_Y^2 + W_Z^2\)
Answer» B. \(\left( {\frac{1}{{{W_X}}} + \frac{1}{{{W_Y}}} + \frac{1}{{{W_Z}}}} \right)\)

In a survey work, three independent angles X, Y and Z were observed with weights WX, WY, WZ, respectively. The weight of the sum of angles X, Y and Z is given by:

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