prove that root 1-cosA÷1+cosA=cosecA-cotA
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Step-by-step explanation:
√1-cosA/1+cosA
=√1-cosA /1+cosA×1-cosA/1-cosA
=√(1-cosA)²/1-cos²A
=√(1-cosA)²/sin²A
=1-cosA/sinA
=1/sinA-cosA/sinA
=cosecA-cotA
=R.H.S
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