" 7."cos^(-1)(x)/(a)

If cos^(-1)((7)/(|x|))+cos^(-1)((4sqrt(15))/(|x|))=(pi)/(2) , then:

If cos^(-1)((7)/(|x|))+cos^(-1)((4sqrt(15))/(|x|))=(pi)/(2) , then:

If x in (0, (pi)/(2)) , then show that cos^(-1) ((7)/(2) (1 + cos 2 x) + sqrt((sin^(2) x - 48 cos^(2) x)) sin x) = x - cos^(-1) (7 cos x)

If x in (0, (pi)/(2)) , then show that cos^(-1) ((7)/(2) (1 + cos 2 x) + sqrt((sin^(2) x - 48 cos^(2) x)) sin x) = x - cos^(-1) (7 cos x)

If x in(0,(pi)/(2)), then show that cos^(-1)((7)/(2)(1+cos2x)+sqrt((sin^(2)x-48cos^(2)x))sin x)=x-cos^(-1)(7cos x)

If cosec^(-1)x=2cot^(-1)7+cos^(-1)((3)/(5)) , then x=

Statement-1: cosec^(-1)(3)/(2)+cos^(-1)(2/3)-2cot^(-1)(1/7)-cot^(-1)7=cot^(-1)7 Statement-2: cos^(-1)x=sin^(-1)((1)/(x)) and for xgt0cot^(-1)x=tan^(-1)((1)/(x))

Statement-1: cosec^(-1)(3)/(2)+cos^(-1)(2/3)-2cot^(-1)(1/7)-cot^(-1)7=cot^(-1)7 Statement-2: cos^(-1)x=sin^(-1)((1)/(x)) and for xgt0cot^(-1)x=tan^(-1)((1)/(x))

cos [cos ^(-1)(-(1)/(7))+sin ^(-1)(-(1)/(7))]=

sec(cos^(-1).(7)/(x)) find dy/dx