Math, asked by badalkumar1, 1 year ago

1-tan^2(45°-A)/1+tan^2(45°-A)

Answers

Answered by Anonymous
5
hai bro this is your answer

=>2sin(x)sin(y) = sin(2x) 
sin²x + cos²x = 1 

tan(x-y) = (tan(x) - tan(y))/(1+tan(x)tan(y)) 
tan(45) = 1 
tan(45 - A) = (tan(45) - tanA) / (1 + tan(45)tanA) 
= (1-tanA)/(1+tanA) 
= (1 - sinA/cosA) / (1 + sinA/cosA) 
= (cosA - sinA) / (cosA + sinA) 

tan²(45 - A) 
= (cosA - sinA)² / (cosA + sinA)² 
= (cos²A + sin²A - 2sinAcosA) / (cos²A + sin²A + 2sinAcosA) 
= (1 - sin(2A)) / (1 + sin(2A)) 

_____swarnim ____####

Anonymous: please mark me as brainlist
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