Physics, asked by amanansari2890, 15 days ago

the angle between a equals to ICAP + 2 j cap and b equals to ICAP - 2 j cap is​

Answers

Answered by dcmallik1396
0

Explanation:

Angle between

i+2j and i-2j

 \cos \: x =   \frac{(i + 2j)(i - 2j)}{ \sqrt{( {1}^{2} +  {2}^{2} ) } \sqrt{ {1}^{2} +  {( - 2)}^{2}  }  }  =  \frac{1 - 4}{ \sqrt{5}  \sqrt{5} }  =  \frac{  - 3}{2 \sqrt{5} }

x =  {cos}^{ - 1}  \frac{ - 3}{2 \sqrt{5} }

Similar questions