Trig Identity Complete Concept sin A + sin B + sin C = 4 cos A/2 cos B/2 cos C/2

#SumToProductTrigIdentity: • Q18 p 401 Nelson Advan...
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Challenge Examples on Compound Angles: • Double angle and Half ...
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Application of Compound Angle: • Trigonometric Identity...
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[@ibrahimsoriebonkayfofanah1976]

Congratulations

[@kevinmadden1645]

Are A,B and C angles of a triangle?

[@MathematicsTutor]

yes