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Prove that: tan^2A-tan^2B=(cos^2B-cos^2A)/(cos^2Bcos^2A)=(sin^2A-sin^2B)/(cos^2Acos^2B).
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asked
Nov 29, 2018
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Class 11
by
kratos
Prove that: tan2A-tan2B=(cos2B-cos2A)/(cos2Bcos2A)=(sin2A-sin2B)/(cos2Acos2B).
trigonometrical identities
trigonometry
class-11
class-10
icse
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+6
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answered
Jan 27, 2020
by
kratos
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Solution is.......
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