Question

Two vectors A bar amd B bar are the such that A bar +B bar =c bar and A square +B square=C sqaure .If theta is angle between positive directions of A bar and B bar

Answer 1

Answer:

Vector c is resulant of vector a and b by triangle

Law of addition

Therefore A and B are 90 degree by Pythagoras Theoram

Answer 2

The Direction will be Ф = π/2.

We are Given,

A² + B²= C²... equation (1)

A⁻ + B⁻ = C⁻

which gives us the identity

A² + B² + 2AB = C²...equation (2)

from (1) and (2)

⇒2A⁻. B⁻ = 0

⇒A⁻. B⁻ = 0

⇒A B CosФ = 0

If A ≠ 0 B ≠ 0 then CosФ = 0

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