i thought sin(a+B) = sina cosb + cosa sinb????
if thats true shouldnt ie be
rsin Ɵ cos theta + rcosƟ sintheta??
R = sqrt(7^2 + 1^2) = 5sqrt(2)
7cosƟ + sinƟ = R[sin alpha cosƟ + cos alpha sin Ɵ] = Rsin(Ɵ+alpha)
tan alpha = 7/1 = 7
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R = sqrt(7^2 + 1^2) = 5sqrt(2)
7cosƟ + sinƟ = R[sin alpha cosƟ + cos alpha sin Ɵ] = Rsin(Ɵ+alpha)
tan alpha = 7/1 = 7