Question

Find the value of 2tan^45° plus cos^30° minus sin^60°.

Answer 1

2(1) + √3/2-√3/2

=2 is the answer

Answer 2

If I am right you mean
$2 \tan ^{2} 45 \: \: \: + \cos^{2} 30 \: \: - \sin^{2} 60 \\ = 2 \times 1 + \frac{3}{4} - \frac{3}{4} \\ = 2$