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iit jee Grade: 12
        

in a triangle angle A > angle B. if the measured angles A and B satisfy the equation 3sinx - 4sin3x + k = 0, 0

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear


3sinx - 4sin3x + k = 0


sin3x =-k


since  0<k<1


 so    -1<sin3x<0 ...............1


        A and B are angel of triangle so 


  0< A,B,A+B<∏


 0<3A,3B<3∏


 from equation 1 


∏ <3A,3B <2∏


A and B angel satisfied the equation 1  then


A+B =∏


so angel C=0 which is not possible in a triangle.


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Badiuddin





7 years ago
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