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In △PQR, ¯PQ = 5i...

In △PQR, ¯PQ = 5i - 2j and ¯QR = 4i + 3j. Find ¯RP

A.

-i - 5j

B.

-9 - j

C.

i + 5j

D.

-9i + j

Correct answer is A

¯PQ = 5i - 2j;  ¯QR = 4i + 3j

 ¯RP¯PQ¯QR

= 5i - 2j - [4i + 3j] =  5i - 2j - 4i - 3j

= i - 5j