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Tan^2 45=1 (1)
Cos^2 30=3/4. ( 2)
sin^2 60=3/4. (3)
From 1,2,3
1+3/4+3/4=10/4=2.5
Cos^2 30=3/4. ( 2)
sin^2 60=3/4. (3)
From 1,2,3
1+3/4+3/4=10/4=2.5
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