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Tan^2A+tan^2B=(sin^2A-sin^2B)/cos^2A-cos^2B Prove
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,
tan-2a
Dhanalakshmi
July 8, 2019, 11:29am
1
Tan
2
A+tan
2
B=(sin
2
A-sin
2
B)/cos
2
A-cos
2
B
Prove
Dhanalakshmi
July 8, 2019, 11:31am
2
