Question

The vectors 5i +8j and 2i + 7j are added. The magnitude of the sum of these vector is
[a] √274
[b] 38
[C] 238
[d] 560
give me brief answer. on pg ​

Answer 1

Underroot 274

Explanation:

Fx =F cos thita.

Fy =F sin thita and solve

Answer 2

Answer:

√274

Explanation:

1ST VECTOR => 5 i + 8 j

2ND VECTOR => 2 i + 7 j

SUM OF THESE VECTORS => 7 i + 15 j

MAGNITUDE OF RESULTANT VECTOR :-

√ ( 7 ^ 2 + 15 ^ 2 )

= √ ( 49 + 225 )

= √ 274