5. If 6cottheta + 2 cosectheta = cottheta + 5cosectheta, then costheta is
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Answer:
6 cotA + 2 cosec A = cotA + 5cosec A
so, 6*cosA/sinA + 2/sinA = cosA/sinA + 5/sinA
= 5 cosA/sinA -3/sinA = 0
so, 5cos A-3/sinA =0
so , 5 cos A - 3 = 0
cos A = 3/5
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