cosA - SinA +1 / cosA +SinA -1 =1+ cosA / SinA
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Answers
Answered by
5
Step-by-step explanation:
cosA-sinA+1/cosA+sinA-1
devide sinA in both numerator & denominator
cotA-1+cosecA/cotA+1-cosecA
=cosecA+cotA-(cosec²A-cot²A)/ (cotA+1-cosecA)
=cosecA+cotA-(cosecA-cotA)(cosecA+cotA)/(cotA+1-cosecA)
=(cosecA+cotA)(1-cosecA+cotA)/ (cotA+1-cosecA)
=cosecA+cotA
=1/sinA+cosA/sinA
=1+cosA/sinA
thanks sister
Answered by
10
Answer:
____________
Step by step explanation:-
Picture is attached ; your solution is in that
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Identity we used;
(a+b)(a-b)=a^2-b^2
cosecA=1/sinA
cotA=CosA/sinA
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