Question
Six boxes F1, G1, H1, I1, J1 and K1 are kept one above
another. The bottommost box is numbered as 1 and the topmost box is numbered as 6. F1 is three boxes below K1. H1 is immediately below I1. Neither I1Â nor H1 is adjacent to K1. There are two boxes between I1 and G1. Which box is kept fourth from the bottom?Solution

Find the value of the given expression.
2 × (cos 60° – tan 45° + sec 60°)
What is the value of (4/3) cot2 (p/6) + 3 cos2 (150o) – 4 cosec2 45o + 8 sin (p/2)?
...If cosx/siny = n and cosx/cosy = m, then the value of cos 2 y is:
1. m 2 /(m 2 Â + n 2 )
2. 1/(m ...- If sin 2a = (5/9), then find the value of (sin a + cos a).
If tanθ = x then find the value of cos 2θ?
If cot5A = tan(3A-14Ëš), find the value of A? Given that 5A and 3A-14Ëš are acute angles.
If sin θ + cos θ = 1.2, find the value of sin θ. cos θ.
If cos2B = sin(1.5B + 20o), then find the measure of 'B'.
- If 2cos²A + 3sin²A = 13/5, then find the value of (sec²A - 1)