Solve: 4 sin(2y-0.3)+5 cos(2y-0.3)=0

glamrockqueen7 2020-10-26 Answered
Solve: 4sin(2y0.3)+5cos(2y0.3)=0
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Expert Answer

davonliefI
Answered 2020-10-27 Author has 79 answers
4sin(x)+5cos(x)=0
4sin=5cos
sin(x)=(54)cosi(x)
sin2=(2516)cos2=1.5625cos2
sin2=1.5625[1sin2(x)]
sin2(1+1.5625)=1.5625
2.5625sin2=1.5625
sin2(x)=(1.56252.5625)=0.609756097
sin(x)=0.609.=0.780868809
invers sinx=51.34019175 deg
2y0.3=51.34019175
2y=51.34+0.3=51.64019175
y=51.6402=25.82009587
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