Cos^2 30 degree.cos^2 45 degree +4sec^2 60 degree +1/2 cos^2 90 degree-2tan^2 60 degree
We know that cos 30=31/2 /2, cos45=1/21/2 , sec60= 21/2 , cos90=0 and tan60=31/2
SUbstituting the values in the expression we get,
(31/2 /2)2 * (1/21/2)2 + 4*(21/2 )2 + (1/2)*0-2*(31/2)2
= (3/4*1/4)+8+0-6= 3/16+2= 35/16
THUMS UP!!!
SUbstituting the values in the expression we get,
(31/2 /2)2 * (1/21/2)2 + 4*(21/2 )2 + (1/2)*0-2*(31/2)2
= (3/4*1/4)+8+0-6= 3/16+2= 35/16
THUMS UP!!!