If A = 3i - 4j+2k its components in yz plane and zx plane are respectively (A) rooy13 and 5 (B) 3 and 2root5 (C) 2root5and root13 (D) root13and root29
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Answer:
C
Explanation:
Length in yz plane = √Ay²+Az²
= √(-4)²+2²
= √16+4 = √20 = 2√5
Length in zx plane = √Az²+Ax²
= √3²+2²
= √9+4 = √13
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