2014 · Q55
The value of cos 25° - sin 25° is
Elementary MathematicsTrigonometry
- Apositive but less than 1
- Bpositive but greater than 1
- Cnegative
- D0
Explanation
√2 cos 70°... = √2 sin 65° ≈ 0.605, positive but less than 1.
The value of cos 25° - sin 25° is
Explanation
√2 cos 70°... = √2 sin 65° ≈ 0.605, positive but less than 1.