6. Simplify: cos (-0) sin (90° + 0)...
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6. Simplify: cos (-0) sin (90° + 0)

11th - 12th Class
Maths
Solution
41
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( frac{operatorname{Cos}(-theta)}{sin (90+theta)} ) ( =frac{cos theta}{cos theta}left[begin{array}{c}because cos (-theta)=cos theta operatorname{ard} sin (90+theta) =cos thetaend{array}right. )
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