Question: Please help me simplify the following 3 Simplify each expression sin(I) sin (- COS( -D COST cos () + cos (-) = cos( -) COS

Please help me simplify the following 3

Please help me simplify the following 3 Simplify each expression sin(I) sin

Simplify each expression sin(I) sin (- COS( -D COST cos () + cos (-) = cos( -) COS ( -I sin(-z) sin ()

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