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- senShow that i cos418. - sin 42 = 0=0. |
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Answer» ong>Step-by-step EXPLANATION: GIVEN that:Cos 418°-Sin42°=>Cos(360°+58°)- SIN 42°We know that Cos (360°+A)= Cos A=>Cos58°-Sin42°=>Cos (90°-42°)-Sin42°We know that Cos (90°-A)=Sin A=>Sin 42°-Sin42°=>0Cos 418°- Sin 42° = 0 |
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