2 cos 45° + 4 cos 60°
Using the values of cos 45° = √2 / 2 and cos 60° = 1 / 2:
2(√2 / 2) + 4(1 / 2= √2 + ≈ 2.41
Therefore, 2 cos 45° + 4 cos 60° ≈ 2.41.
2 cos 45° + 4 cos 60°
Using the values of cos 45° = √2 / 2 and cos 60° = 1 / 2:
2(√2 / 2) + 4(1 / 2
= √2 +
≈ 2.41
Therefore, 2 cos 45° + 4 cos 60° ≈ 2.41.