Question

f ⃗ and ሬ⃗ are two vector such that ห⃗ + ሬ⃗ห = ห⃗ − ሬ⃗ห, the angle between vectors ⃗ and

ሬ⃗ is ____ a)0ᵒ b)60ᵒ c)90ᵒ d)120ᵒ​

Answer 1

Answer:

B .............................

Answer 2

Answer:

correct option is C

Explanation:

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