Question

( begin{aligned} & x^{2}-sqrt{2} x+sqrt{3-2 sqrt{2}}=0 & x^{2}-sqrt{2} x+sqrt{(sqrt{2}-1)^{2}}=0 & x^{2}-sqrt{2} x+sqrt{2}-1 &(x-1)(x-sqrt{2}+1)=0 & alpha=1, beta=sqrt{2}-1(alpharangle & cos ^{-1} alpha+tan ^{-1} x+tan ^{2} alpha_{beta} &=0+pi / 4+pi 8 &=3 pi / 8 quad underline{A} end{aligned} )

# • Ex. 9. Ifa and Bla >B) are roots of the equation x2 - 2x + 73-212 = 0, then the value of (cos-'a + tan-'a + tan-'B) is equal to 5111 (b)

Solution