Prove that
Ci) cos 48° sin 18° - sin 48° cos 18° =-1÷2
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LhS =cos 48° sin 18° - sin 48° cos 18°
Step-by-step explanation:
=sin(48-18).
=[sin(A-B)= sinA*cosB-sinA*cosB]
=sin30°
=½
Hence LHS=RHS=1÷2
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