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Find the angle between (a⃗+b⃗) and (A⃗.B⃗) in vector? |
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Answer» Step-by-step EXPLANATION: It is given that, ∣ a ∣= 3 , ∣ ∣ ∣ ∣
∣ ∣ ∣ ∣ =2 and, a ⋅ b = 6
Now, we know that a ⋅ b =∣ a ∣∣ b ∣cosθ ∴ 6 = 3 ×2×cosθ ⇒cosθ= 3 ×2 6
⇒cosθ= 2
1
⇒θ= 4 π
HENCE, the angle between the given vectors a and b is 4 π . |
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