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Grade: 11 

                        
(1+tanA+secA)(1+cotA-cosecA)
8 years ago

Answers : (1)

sai karthik
16 Points 
							
(cosA +sinA+1)(sinA+cosA-1)=(sinA+cosA)(sinA+cosA)-1


                                              =1+2sinAcosA-1


                                                 =sin2A
8 years ago
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