Trigonometric Identity (sinx + sin2x)/(1 + cosx + cos2x) = tanx with Double Angle Expressions

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#SumToProductTrigIdentity #CompoundAngleIdentities #EquivalentTrigonometricExpressions #mhf4utrigonometry #CofunctionIdentity #relatedAcuteAngle #mhf4u_trigonometry #trigonometric_identities_Test #CompoundAngle #LinearTrigonometricEquations #QuadraticTrigonometricEquations
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Thank you. Really easy and simple to understand

mknightb
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pls solve suppose x is between 90 degree and 180 and sinx=3÷5 find sin2x since sin^2x=2sinxcosx, find cosx first.use cos^2x+sin^2x=1

kaltaahmed