To solve this, we can first convert all the trigonometric functions to their respective values:
cos 60 = 0.5sin 30 = 0.5tg 60 = sqrt(3) = 1.732ctg 45 = 1
Now, we can substitute these values back into the equation:
0.5 2 0.5 - sqrt(3)^2 - 1 = 0.5 - 3 - 1= -3.5
Therefore, the solution is -3.5.
To solve this, we can first convert all the trigonometric functions to their respective values:
cos 60 = 0.5
sin 30 = 0.5
tg 60 = sqrt(3) = 1.732
ctg 45 = 1
Now, we can substitute these values back into the equation:
0.5 2 0.5 - sqrt(3)^2 - 1 = 0.5 - 3 - 1
= -3.5
Therefore, the solution is -3.5.