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OpenStudy (anonymous):
prove that tanA+cosA=secAcscA
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OpenStudy (anonymous):
please need a help................
OpenStudy (inkyvoyd):
is is really cos A, or cotA?
OpenStudy (inkyvoyd):
@nada.abdalla
OpenStudy (ikram002p):
sin A / cos A + cos ^2 A / cos A = sin A cos ^2 A / cos A = bla bla hehe u continue r u sure from the formula ?
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