No links please Q (i) If p→ is a unit vector and x→-p→ x→+p→=8; find x→ 2 d (i) - Maths - Inverse Trigonometric Functions

Question

No links please
Q (i) If p → is a unit vector and x → - p → x
→ + p → = 8 ; find x →
2 d (i) Ans : 3

Rishabh Mittal · Accepted Answer

Dear Student,

x→ - p→   x→ + p→ =8x→2 - p→2=8x→2 - 1=8                  Since p→ is a unit vector x→2 =9x→=3    ANS

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No links please Q.(i) If p → is a unit vector and x → - p → . x → + p → = 8 ; find x → 2.d. (i) Ans : 3