Question

Express the values of trigonometric ratios in terms of radians for theta = 0 to 90°​

Answer 1

Answer:

The answer is that the trigonometric ratios are defined only for the non-right angles of a right triangle. SteamKing said: The cosine of 90 degrees is zero and the tangent of 90 degrees is infinite.

Cos 90° = 0

Also, it is easy to remember the special values like 0°, 30°, 45°, 60°, and 90° since all the values are present in the first quadrant. All the sine and cosine functions in the first quadrant take the form √(n/2) or √(n/4). Once we find the values of sine functions it is easy to find the cosine functions.

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