prove that cosA cotA/( 1-sinA)=1+cosecA
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Answer:
Step-by-step explanation:
cosA cotA/( 1-sinA)
→cos A (cosA/ sinA)/(1- sin A)
→cos²A/(sinA(1- sinA))
→(1-sin²A)/(sinA(1- sinA))
→(1+ sinA)(1- sinA)/(sinA(1- sinA))
→(1+ sinA)/sin A
→cosecA+1
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