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sin inverse (sin4) (a) 4 (b) 4 -2pie (c) pie - 4 (d) none
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sin inverse (sin4) (a) 4 (b) 4 -2pie (c) pie - 4 (d) none
Solution:

We know that sin inverse function is an inverse function of the sine function. Hence, sin inverse of sin(x) is x. However, if x is not in the range of sin inverse function, then we need to find the value of x which is in the range of sin inverse function and whose sin value is the same as sin(x).



  • Option (a) 4:

  • The sine function has a range of [-1,1]. Therefore, sin(4) is in the range of the sine function. Therefore, sin inverse of sin(4) is equal to 4. Hence, the answer is (a) 4.


  • Option (b) 4 - 2π:

  • The sine function is periodic with a period of 2π. Therefore, sin(x) is equal to sin(x + 2π), for any value of x. Hence, sin inverse of sin(4 - 2π) is equal to sin inverse of sin(4). Therefore, the answer is (a) 4.


  • Option (c) π - 4:

  • The sine function is an odd function. Therefore, sin(-x) is equal to -sin(x), for any value of x. Therefore, sin inverse of sin(π - 4) is equal to sin inverse of sin(4 - π). Since sin(π - x) is equal to sin(x), for any value of x, sin inverse of sin(4 - π) is equal to sin inverse of sin(π - 4). Therefore, the answer is (c) π - 4.


  • Option (d) None:

  • Since sin(4) is in the range of the sine function, sin inverse of sin(4) exists and is equal to 4. Therefore, option (d) is incorrect.

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sin inverse (sin4) (a) 4 (b) 4 -2pie (c) pie - 4 (d) none
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sin inverse (sin4) (a) 4 (b) 4 -2pie (c) pie - 4 (d) none
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