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| 1. |
( sinA+cosA) ( tanA + cotA )= secA+ cosecA |
| Answer» (sinA+cosA)(sin a /cos a + cos a/ sin a)(Sin a+cos a) (1/sina.cos a)(Sin a/sin a. Cos a.+cos a/sin. Cos)(1/cos a +1sin a)(Sec a+cosec a) | |