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Earlier discussion
3 older comments kept for context.
Afani Godfrey
How you get the 90
Winner
Yes o
How did we get the 90
Oluwaseun Adeyemi
R2 - P2 + Q2 = 122 + 52
= 144 + 25 = 169
∴R = √169 = 13N
∴ angle between the forces is 90o