f(x)= sgn (x),then value of f(sin4) is
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Answer:
Answer is -1
Step-by-step explanation:
sgn funⁿ gives 1 when greater than 1
0 when equal to 0
-1 when less than 1
so 1 rad ≈57°
4 rad≈229°. which is less than 270° so it lies in 3rd quadrant,there sin is negative so , the value inside the sgn funⁿ is negative therefore the answer is -1.
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