Mathematics, 23.09.2019 11:30 brianna8739
If a+b+c=90 then prove that tana+cosa. secb. secc= tanb+cosb. secc. seca=tanc+cosc. seca. secb
Answers: 1
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If a+b+c=90 then prove that tana+cosa. secb. secc= tanb+cosb. secc. seca=tanc+cosc. seca. secb...
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