Question

prove that
CosA+sinA/cosA-sinA=tan(π/4-A)
​

Answer 1

Answer:

you have to correct your que in RHS its tan (45⁰ + A)

Step-by-step explanation:

divide me cos A

cos A + sin A /cos A/cosA- sin A /cosA

1+tan A/1-tan A

(tan45⁰=1)

tan 45⁰+tan A /1- tan A × tan 45⁰

$\tan(a + b) = \tan(a) + \tan(b) \div 1 - \tan(a ) \tan(b)$

so ,

tan (45⁰+A)

hence proved