Question

4( sin^2 30 + cos^2 60) – 3(cos^2 45 - tan2^ 45) =

Answer 1

Step-by-step explanation:

4(

$4(\sin{}^{2} 30 + \cos ^{2} 60) - 3(\cos ^{2} 45 - \tan ^{2} 45) =$

4{(1/2)2+(1/2)2} -3{(1/√2)2 -(1)2} =

4(1/4+1/4) - 3(1/2-1)

=4(1/2) - 3(-1/2)

=2 +3/2

=7/2 is the answer