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(1+tanA+secA)(1+cotA-cosecA)

(1+tanA+secA)(1+cotA-cosecA)

Grade:11

1 Answers

sai karthik
16 Points
11 years ago

(cosA +sinA+1)(sinA+cosA-1)=(sinA+cosA)(sinA+cosA)-1

                                              =1+2sinAcosA-1

                                                 =sin2A

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