One more thing I should say

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Posted by Edward on September 15, 1998 at 22:23:42:

In Reply to: Can anyone help me solve this porblem? posted by Ivan Li on September 13, 1998 at 22:32:51:

I didn't write down: "<" means angle.

Edward

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Comments: : I didn't write down: <ABC = <HAB = 135*, by the meaning of multiplication of complex numbers. : "<" means angle. : Edward

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