Answer:
5
Subsitute the number five where the c is at and solve it 5 + 8 = 13
Answer:
a=-2î+j-5k
|a| = √(−2)² +1² + (−5)²
a = √√4+1+25
a = √30
Thus, direction cosines of a are
(- 2/(sqrt(30)), 1/(sqrt(30)), - 5/(sqrt(30)))
I don’t understand where is the equation