prove the identity cos A/1-tan A-sin^2A/cosA-sinA=sinA+cosA
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Step-by-step explanation:
1−tanA
cosA
+
1−cotA
sinA
1−
cosA
sinA
cosA
+
1−
sinA
cosA
sinA
cosA−sinA
cos
2
A
−
cosA−sinA
sin
2
A
cosA−sinA
cos
2
A−sin
2
A
cosA−sinA
(cosA+sinA)(cosA−sinA)
sinA+cosA
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