cosA , sinA, cotA are in GP then
tan^6 A - tan^2 A = ?
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Answer:
Step-by-step explanation:
cosA, sinA, cotA are in G.P
=> sin2 A = cosA*cotA
= (cosA*cosA)/sinA
=> sin2 A = cos2 A/sinA
=> sin2 A/cos2 A = 1/sinA
=> tan2 A = 1/sinA
Now tan6 A - tan2 A
= (tan2 A)3 - tan2 A
= (1/sinA)3 - 1/sinA
= 1/sin3 A - 1/sinA
= (1-sin2 A)/sin3 A
= cos2 A/sin3 A
= cot2 A*cosecA
= (cosA/sinA)2 * (1/sinA)
= cot2 A*cosecA
So tan6 A - tan2 A = cot2 A*cosecA
pls mark as brainliest answer
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