Page 116 - Math SL HB Sem 1

CIRCULAR FUNCI'IONS AND TII.IGONOMETRY

EXPRESSION acos (, + bsin d

acos g + bsin d = rcos (d +a )

asin B +bcos a - rsin(a +a) wherer: Jr\ b'

Example l: Dxpress 3sind - 2cosd asrsin(d - a)

Example 2: Solve the equation 5cos x * 12 sin x :6.5 for 0 a x12r

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