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Vishnu Saran Grade: 10
        

Find the values of theta ,Θ that satisfy the equation. 2cot2Θ = 4 - cosecΘ, for values of 180 degrees < Θ < 360 degrees


Thanks,


Vishnu

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Deer Vishnu


2cot2Θ = 4 - cosecΘ


or 2 cosec2Θ +CosecΘ -6 =0


which gives


CosecΘ =-2 and 3/2


but for 180<Θ<360


cosecΘ is negative


so CosecΘ=-2


SinΘ =-1/2


Θ =210 and 330  degree






Regards


Badiuddin

7 years ago
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