The value of cos 25 deg ndash sin 25 deg is ........

Quantitative Aptitude (RRB NTPC) Trignometry

The value of cos 25° – sin 25° is

positive but less than 1

positive but greater than 1

negative

Since, value of cos Θ decreases, from 0° to 90° and at 45° it is equal to the value of sin Θ.

Similarly, value of sin Θ increases from 0° to 90° and at 45° it is equal to the value of cos Θ.

For 0° < Θ < 45°, cos Θ > sin Θ
So, value of cos 25° – sin 25° is always positive but less than 1.

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