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A = 8 N
B = 6 N
α = 60⁰
R = ?
R^2 = A^2 + B^2 + 2.A.B.cos 60⁰
R^2 = 8^2 + 6^2 + 2.8.6.0,5
R^2 = 64 + 36 + 48
R^2 = 148
R = √148
R = 12,165 satuan
semoga membantu
fx=f.cosx. fy=f.sinx
=8.1/2. =8.1/2 √3
=4. =4√3
IRI=√fx2+fy2
=√4kuadrat+4√3kuadrat
=√16+16.3=√16+48=√64=8
besar 6N
fx=f.cosx. fy=f.sinx
=6.1/2=3. =6.1/2√3=3√3
IRI=√fxkuadrat+fykuadrat
=√3kuadrat+3√3kuadrat
=√9+9.3=√9+27=√36=6