2(tan 45°)² + (cos30°) - (sin60°)²

2(tan 45°)² + (cos 30°) - sin(60°)²
= 2(1)² + 1/2 √3 - (1/2 √3)²
= 2 + 1/2 √3 - 3/4
= 5/4 + 1/2 √3
= 1/4(5 + 2√3)

Bab : Trigonometri

2(tan 45°)² + (cos30°) - (sin60°)²
= 2(1)² + 1/2(√3) - (1/2(√3))²
= 2 + 1/2(√3) - 3/4
= 5/4 + 1/2(√3)
= 5/4 + √3/2
= 5/4 + 2√3/4
= 1/4(5 + 2√3)