MCQ
રેખાઓ $2x = 3y = -z$ અને $6x = -y = -4z $ વચ્ચેનો ખૂણો ......... $^o$
- A$0$
- B$90$
- C$45$
- D$30$
જ્યાં ${a_1}{a_2}\,\, + \;\,{b_1}{b_2}\,\, + \;\,{c_1}{c_2}\,\, = \,\,6\,\, - \,\,24\,\, + \,\,18\,\, = \,\,0\,\, \Rightarrow \,\,\theta \,\, = \,\,90^\circ $
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