For what value of \(x\) does \(6\sin(2x - 25)^\circ\) attain its maximum value in the range \(0^\circ \le x \le 180^\circ\)

Assessment: JAMB UTME - Mathematics - 1998 Subject: General Mathematics

Question 1 Report

For what value of \(x\) does \(6\sin(2x - 25)^\circ\) attain its maximum value in the range \(0^\circ \le x \le 180^\circ\)

Answer Details
The maximum value of the function y = 6sin(2x-25) occurs when the argument of the sine function is equal to 90 degrees (or pi/2 radians), because the maximum value of the sine function is 1. So we need to solve the equation 2x-25 = 90. Adding 25 to both sides gives 2x = 115, and then dividing by 2 gives x = 57.5 degrees. Therefore, the answer is x = 57.5 degrees, which is the value of x where the function 6sin(2x-25) attains its maximum value in the given range.

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