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Engineering Exams RRB-JE JE (Junior Engineer) DMS (Depot Material Superintendent) CS (Chemical Supervisor - Research) MS (Metallurgical Supervisor - Research) Mathematics 2019 24-May-2019 Paper-1 Shift-2 Easy +1 -0.33 CMA (Chemical and Metallurgical Assistant)
Find the value of sin 30°.
Correct Answer: @.
Explanation: The value of sin 30° is 1/2. This can be determined using a standard 30-60-90 right triangle, where the side opposite the 30° angle is exactly half the length of the hypotenuse. In the unit circle, the sine of an angle corresponds to the y-coordinate of the point on the circle, and for 30° (or π/6 radians), that coordinate is 0.5.
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