निम्नलिखित के मान निकालिए |
` (5cos^(2) 60^(@) + 4 sec^(2) 30^(@) - tan^(2) 45^(@))/( sin^(2) 30^(@) + cos^(2) 30^(2))`

Explanation

`= (5 cos ^(2) 60^(@) + 4 sec^(2) 30^(@) - tan^(@) 45^(@))/(sin^(@) 30^(@) + cos^(@) 30^(@))`
` = (5((1)/(2))^(2) + 4 ((2)/(sqrt(3)))^(2)- (1)^(2))/(((1)/(2))^(2) + (sqrt(3)/(2))^(2))`
` = ((5)/(4) + 4 xx(4)/(3) -1)/((1)/(4) + (3)/(4) ) =((15 + 65- 12)/(12))/(1) = (67)/(12)`