deference of two wit
tuo uut vectors
Salto
unit vector, then their dot Products
X/2. What is the value of x?
Answers
Answered by
0
Answer:
Cross Product – Let we have given two vector A = a1 * i + a2 * j + a3 * k and B = b1 * i + b2 * j + b3 * k. Then cross product is calculated as cross product = (a2 * b3 – a3 * b2) * i + (a3 * b1 – a1 * b3) * j + (a1 * b2 – a2 * b1) * k, where [(a2 * b3 – a3 * b2), (a3 * b1 – a1 * b3), (a1 * b2 – a2 * b1)] are the coefficient of unit vector along i, j and k directions.
Answered by
1
Answer:
∣
a
+
b
∣=1
∣
a
∣
2
+∣
b
∣
2
+2∣
a
∣∣
b
∣cosθ
=1
→2(1+cosθ)=1
→cosθ=
2
−1
θ=120
∘
∣
a
+
b
∣=
∣
a
∣+∣
b
∣
2
−2∣
a
∣∣
b
∣cosθ
=
1+1−2cos120
∘
=
2+2×
2
1
=
3
Explanation:
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