(1) (√3 sin θ + cos θ)/2 sin θ (2) (√3 cos θ - sin θ)/2 sin θ (3) ( cos θ + √3 sin θ)/2 sin θ (4) (√3 cos θ + sin θ)/2 sin θ Solution: Given... View Article
(1) 2 [√(ab)/(a - b) ] sin (C/2) (2) 2 [√(ab)/(a - b) ] tan (C/2) (3) 2 [√(ab)/(a - b) ] cos (C/2) (4) 2 [√(ab)/(a - b) ] sec (C/2) Solution:... View Article
1) 10 2) 12 3) 14 4) √221 Solution: Given b = 5 and c = 11 We have cos C = 5/CD = 10/BC = 10/a Also cos C = (a2 + b2 - c2)/2ab = (a2 + 25... View Article
(1) sin2 A, sin2 B, sin2 C are in GP (2) sin 2A, sin 2B, sin 2C are in AP (3) cos 2A, cos 2B, cos 2C are in AP (4) a sin A, b sin B, c sin C... View Article
(1) π/6 (2) π/3 (3) π/4 (4) π/2 Solution: Given sin A + sin B = √3(cos B - cos A) sin A + √3 cos A = √3 cos B - sin B Divide both sides by 2... View Article
Plastics are made from many identical small particles called monomers. These monomers are strung together like a chain to form a polymer.... View Article
Wave is a disturbance in which there is a transfer of energy from place to place. The particles of the medium vibrate during wave propagation. In... View Article
Sulphur is a chemical compound with the symbol S and has the atomic number 16. Sulphide is an inorganic anion of sulphur. It has the chemical... View Article
The strongest superacid in the world is Fluoroantimonic Acid. It is prepared by mixing hydrogen fluoride and antimony pentafluoride. A superacid... View Article
The ideal gas law is written as PV=nRT P is the pressure of the gas V is the volume of the gas n is the amount of the substance of the gas R is... View Article
The strength of the covalent bond can be determined by measuring the energy required to break the bond. The strength of the bond will increase as... View Article
Silica or silicon dioxide is naturally present in some foods like beets, bell peppers, oats etc. It is also added to many foods and supplements.... View Article
The fastest thing in the universe is the speed of light in vacuum. Nothing travels faster than the speed of light which is equal to 3 x 108 m/s.... View Article
A chemical bond is a force of attraction between the ions, atoms or molecules to form compounds. The bond will be due to the sharing of electrons... View Article
