7. sin 2 theta cosec theta = 1.
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•sin2¤ =2sin¤cos¤
•sin¤=1/cosec¤
Thus, putting these values in the given sum we get 2cos¤ =1 in the last.
so, cos¤=1/2
and cos¤=1/2 only if principle value of ¤ is 60°
Thus, your answer is 60° or π/3
(I write theta as this '¤' sign)
I hope you get it, mark it as brainliest if u find it helpful!!!
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