(sec2 theta - 1 ) ( 1- cosec2 theta )=1
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Answer:
Step-by-step explanation:
[1/cos²θ - 1] [ 1 - 1/sin³θ]
=> (1 - cos²θ)[sin³θ - 1] /sin³θ.cos²θ
=> sin³θ * (-cos²θ) / sin³θ.cos²θ
= - 1.
= R.H.S
Hence proved
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