Math, asked by cewekclans, 7 months ago

(cosA+sinA)²+(cosA-sinA)²=2

Answers

Answered by saiyedfazil

2

(cosA+SinA)^2+(cosA - SinA)^2= 2

cos^2A+Sin^2A+2sinAcosA + cos^2+sin^2A -2SinAcosA = 2

1+1= 2. (sin^2A+cos^2A=1

2=2

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