Question
In an atom, which particles are responsible for chemical
bonding? ÂSolution
Electrons are the particles involved in chemical bonding.  They are located in the outer shell of atoms.  When atoms bond, they either share or transfer electrons to achieve a stable configuration.  This leads to the formation of covalent or ionic bonds.
- Simplify the following trigonometric expression:
15 cos 27° sec 63° − 9 cot 61° tan 29° If √3 tan 2θ – 3 = 0, then find the value of tanθ secθ – cosθ where 0 < θ < 90°
If (cos A - sin A) = √2 cos (90° - A), then find the value of cot A.


If tan 3.5θ x tan 6.5θ = 1 then the value of tan 5θ is
Find the maximum value of 14 sin A + 24 cos A.

- If cos θ = (4x² – 1)/(1 + 4x²) then find the value of sin q.
The minimum value of 9 cos2 θ + 36 sec2 θ isÂ