Question

pls answer this question correctly
those who answer correctly i will mark them as brainliest​

Answer 1

Explanation:

A+B=C

SO, {|A|^2+|B|^2+2ABcos○}^1/2 = |C|

|A|^2+|B|^2+2ABcos○ = |A|^2+|B|^2

2ABcos○ = 0

cos○ = 0

So, ○ = 90°

Answer 2

Answer:

Option (3). 90°

Explanation:

If we add two vectors A + B = C

Then

Using parallelogram law of vector addition the magnitude of C is

C^2 = A^2 + B^2 + 2ABcos@

Where @ is angle between A and B

Since given

C^2 = A^2 + B^2

Meaning cos@ = 0

-> @ = 90°