`((31)/(-4)+(-5)/(8))=?`

Add the rational numbers: (31)/(-4) and (-5)/(8) (ii) (5)/(36) and (-7)/(12)

Add the rational numbers: (i) (31)/(-4)\ a n d(-5)/8 (ii) 5/(36)\ a n d\ (-7)/(12)

Add the following rational numbers: (i) (-7)/(27)\ a n d(11)/(18) (ii) (31)/(-4)\ a n d(-5)/8

Add the following rational numbers: (-7)/(27)\ a n d(11)/(18) (ii) (31)/(-4)\ a n d(-5)/8

If 8 cos 2 theta + 8 sec 2 theta = 65, 0 lt theta lt (pi)/(2) , then the value of 4 cos 4 theta is equal to a) (-23)/(8) b) (-31)/(8) c) (-31)/(32) d) (-33)/(32)

If 8cos2theta+8sec2theta=65 , 0ltthetaltpi/2 , then the value of 4cos4theta is equal to.............. A) -(33)/(8) B) -(31)/(8) C) -(33)/(32) D) -(31)/(32)

Show that 3/4 + (3.5)/(4.8)+ (3.5.7)/(4.8.12)+ …… = sqrt8 -1

The length of the perpdndicular from the point (-1,3,9) to the line (x-13)/(5) = (y+8)/(-8) = (z -31)/(1) is