plz help me with trigonometry.I have test tomorrow
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remember the basic trigonometric identities, the test will be easy
(cosecA-cotA)⁻¹-cosecA
=cosecA+cotA-cosecA
=cosecA-(cosecA-cotA)
=cosecA-(cosecA+cotA)⁻¹
hence proved
(cosecA-cotA)⁻¹-cosecA
=cosecA+cotA-cosecA
=cosecA-(cosecA-cotA)
=cosecA-(cosecA+cotA)⁻¹
hence proved
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