Question
Solution
sec ÆŸ - tan ÆŸ = x/y ------ (i) sec ÆŸ + tan ÆŸ = y/x ------ (ii) solving (i) and (ii), we get => 2 sec ÆŸ = (x2 + y2)/xy => sec ÆŸ = (x 2 + y 2)/2xy
{(21/20) + (20/21)}2 - {(21/20) - (20/21)}2 = ?
If y + 1/y = 2 then find y117 + 1/(y117)
f(y) = y² – 5y + 6. Determine f(3) + f(–2).
Let {x + (1/x)} = 4, then Determine the value of {x² + (1/x²)}
If x + y + z = 20, x² + Y² + z² = 160 and x z = y², then find the value of x z?
If x + 1/x = 3, find the value of x³ + 1/x³.
A number is increased by 20%, and the resulting number is decreased by 20%. If the initial number is ₹x, the final number is ₹2880. What is the valu...
- If (x – 12) 3  + (x – 5) 3  + (x – 7) 3  = 3(x – 12)(x – 5)(x – 7) then find the value of (x 2 �...
If, ( a + b = 14 ) and ( a² + b² = 106 ), then find the value of (a³ + b³).
If p = 25 - q - r and pq + r(q + p) = 189, then find the value of (p² + q² + r²).
