`sin^(- 1)(a-(a^2)/3+(a^3)/9+(a^3)/9+)+cos^(- 1)(1+b+b^2+)=pi/2` sin a-+... +cos 11+b+b2+...

If sin^(-1)(a-a^(2)/3+a^(3)/9+…..)+cos^(-1)(1+b+b^(2)+…..)=pi/2 , then

If sin^(-1)(a-a^2/3+a^3/9-...)+cos^(-1)(1+b+b^2+...)=pi/2 then find a and b

If sin^(-1)(a-a^2/3+a^3/9-...)+cos^(-1)(1+b+b^2+...)=pi/2 then find a and b

If sin^(-1)(a-a^2/3+a^3/9-...)+cos^(-1)(1+b+b^2+...)=pi/2 then find a and b

If sin^(-1)(a-(a^(2))/3+(a^(3))/9+…..)+cos^(-1)(1+b+b^(2)=……..)=(pi)/2 then

sin ^ (- 1) (a- (a ^ (2)) / (3) + (a ^ (3)) / (9) + (a ^ (3)) / (9) +) + cos ^ ( -1) (1 + b + b ^ (2) +) = (pi) / (2) sin a - + ... + cos11 + b + b2 + ...

sin^(-1)(a-a^2/3+a^3/9+....)+cos^(-1)(1+b+b^2+....)=pi/2 when a) a = -3 and b = 1 b) a = 1 and b =1 c) a = 1/6 and b =1 d)None of these

(a) sin^(-1)(-1/2)=? (b) cos^(-1)(sqrt3/2)=?

((sin ^ (2) a sin ^ (2) b + sin ^ (2) a cos ^ (2) b + cos ^ (2) a) + (sin ^ (2) (2 pi + a) + cos ^ (2) (6 pi-a) +1)) / (sin ^ (2) ((pi) / (3) -4 pi) + cos ^ (2) (8 pi + (pi) / (3)) +2))

(a ^ (3) (sin ^ (3) pi) / (2) -b ^ (3) cos ^ (3) (pi)) / (a ^ (2) (sin ^ (2) pi) / ( 2) + ab cos pi-b ^ (2) cos pi)