23. Evaluate. Sin2 60° cos2 30° + sin 30° cos 60dgrer
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Sin^2 60=3/4
Cos^2 30=3/4
Sin^2 30=1/4
Cos^2 60=1/4
Thus,
(3/4)(3/4)+(1/4)(1/4)=9/16+1/16=10/16=5/8
Cos^2 30=3/4
Sin^2 30=1/4
Cos^2 60=1/4
Thus,
(3/4)(3/4)+(1/4)(1/4)=9/16+1/16=10/16=5/8
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