I am learning trigonometry for the first time need help from everybody. Questions in attachments.
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3. 1/cosecA-cot - 1/sinA = 1/sinA - 1/cosecA+cotA
= 1/cosecA-cotA + 1/cosecA+cotA = 1/sinA + 1/sinA
cosecA + cotA + cosecA - cot A = 1+1
=--------------------------------------------- -------------
(cosecA-cotA) (cosecA+cotA) sinA
cosecA + cosecA = 2
= -------------------------- ---------
(cosec^2-cot^2) sinA
2 cosecA = 2 cosecA (:• cosec^2- cot^2 =1)
= 1/cosecA-cotA + 1/cosecA+cotA = 1/sinA + 1/sinA
cosecA + cotA + cosecA - cot A = 1+1
=--------------------------------------------- -------------
(cosecA-cotA) (cosecA+cotA) sinA
cosecA + cosecA = 2
= -------------------------- ---------
(cosec^2-cot^2) sinA
2 cosecA = 2 cosecA (:• cosec^2- cot^2 =1)
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