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Express acosheta+bsinhetaacos heta + bsin hetaacosheta+bsinheta as single trig function
R=sqrta2+b2R = sqrt{a^2 + b^2}R=sqrta2+b2
analpha = rac{b}{a}
analpha = rac{a}{b}
a=Rcosalphaa = Rcosalphaa=Rcosalpha
b=Rsinalphab = Rsinalphab=Rsinalpha
555
Solving trigonometric equations
Oscillatory motion and wave analysis
AC circuit analysis
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