Math, asked by asifshahzad5121, 16 days ago

An angle between vectors p and has a measure of 120°. If P = 8 and [r] = 8,
calculate p(p-r).​

Answers

Answered by ItzBrainlyQueen01
45

Step-by-step explanation:

\huge\fbox\pink{A}\fbox\blue{n}\fbox\purple{S}\fbox\green{w}\fbox\red{E}\fbox\orange{r}

From the given information we have data as follows :

  • Angle between vector p and r is 120°
  • Measure of p is 8
  • Measure of r is 8

We have to find the value of p × (p - r)

{\bold{\bf{\underline{\green{Consider  \: the  \: given  \: equation}}}}}

{\large{\sf{➠  \:  \:  \:  \: p  \: × \:  (p \:  -  \: r)}}}

{\large{\sf{➠ \:  \:  \:  \: (p \: × \: p) \: - \: (p \: - \: r)}}}

{\large{\sf{➠ \:  \:  \:  \: 0 \: - \: (p \: × \: r)}}}

{\large{\sf{➠ \:  \:  \:  \: -|p| \: × \: |r|  \: × \:  sin  \: \theta}}}

{\large{\sf{➠ \:  \:  \:  \: -(8 \: × \: 8 \: × \: sin \: 120°)}}}

{\large{\sf{➠ \:  \:  \:  \: -64 \: × \: \frac{√3}{2}}}}

{\large{\sf{➠ \:  \:  \:  \: -32 \: × \: √3}}}

{\large{\sf{➠ \:  \:  \:  \: -32 \: √3}}}

 \\  \\ {\large{\sf{\fbox{\underline{\purple{♱ Therefore, the value of p (p - r) is -32√3}}}}}}</p><p>

Answered by indianmedia37
0

Answer:

Step-by-step explanation:

96

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