The Value Of Cos 15 Cos 7 1 2 Sin 7 1 2 Is
1) 1/2 2) 1/8 3) 1/4 4) 1/16 Answer: (2) 1/8 Solution: cos 15° cos 7 1°/2 sin 7 1°/2... View Article
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Simplest Form Of 2 Root2 Root2 Root 2 2 Cos 4x Is
1) sec x/2 2) sec x 3) cosec x 4) 1 Answer: (1) sec x/2 Solution: 2/[√2 + {√2 +... View Article
The Value Of Cot X Tan X Cot 2x Is
1) 1 2) 2 3) -1 4) 4 Answer: (2) 2 Solution: (cot x – tan x)/ cot 2x =... View Article
If A B And C Are The Angles Of A Triangle Such That Sec A B Sec A Sec A B Are In Ap Then
1) cosec2A = 2 cosec2B/2 2) 2 sec2A = sec2B/2 3) 2 cosec2A = cosec2B/2 4) 2 sec2B = sec2A/2... View Article
Find The Value Of Cos X 2 If Tan X 5 12 And X Lies In Quadrant Iii
1) 5/√13 2) 5/√26 3) 5/√13 4) √(1/26) Answer: (4) √(1/26) Solution: Given, tan x = 5/12, x lies in... View Article
If X And Y Are Acute Angles Such That Cos X Cos Y 3 2 And Sin X Sin Y 3 4 Then
1) 2/5 2) 3/4 3) 3/5 4) 4/5 Answer: (4) 4/5 Solution: Given, x and y are acute angles. cos... View Article
The Value Of Tan Pi 5 2 Tan 2pi 5 4 Cot 4pi 5 Is
1) cot π/5 2) cot 2π/5 3) cot 4π/5 4) cot 3π/5 Answer: (1) cot π/5 Solution: tan π/5 +... View Article
Cos 2pi 7 Cos 4pi 7 Cos 6pi 7
1) is equal to zero 2) lies between 0 and 3 3) is a negative number 4) lies between 3... View Article
If Tan X 3 4 Pi X Pi 2 Then The Value Of Cos X 2 Is
1) – (1/√10) 2) 3/√10 3) 1/√10 4) -(3/√10) Answer: (1) – (1/√10) Solution: Given, tan x = 3/4 ,... View Article
If Tan Alpha 2 And Tan Beta 2 Are The Roots Of 8x 2 26x 15 0 Then
1) 627/726 2) -(627/725) 3) – 1 4) None of these Answer: (2) -(627/725) Solution: Given that tan α/2 and... View Article
If Y 1 Tan A 1 Tan B Where A B Pi 4 Then Y 1 Y 1 Is
1) 9 2) 4 3) 27 4) 81 Answer: (3) 27 Solution: Given, y = (1 + tan A) (1... View Article
What Is The Octet Rule Exceptions
Although the duet and octet laws are obeyed by most atoms, there are few variations. Elements such as boron or... View Article
How Do You Find The Speed Of An Electron
A calculation indicates that at around 2,200 kilometres per second, the electron is going. That’s less than 1% of the... View Article
How Do You Find Molar Conductivity At Infinite Dilution
Due to Grotthus’ conduction, H+ has the highest molar conductance value in an aqueous state. In the hydrogen-bonded chain of... View Article
How Do You Separate Azeotropic Mixtures
An azeotrope is a constant-boiling mixture in which the vapour composition is the same as the liquid composition. Thus by... View Article
Why Is Na Used As The Symbol For Sodium
Since Latin extracts some of the symbols of some elements. For starters, in Latin, sodium is referred to as natrium.... View Article
What Is Equilibrium And Why Is It Important
When the quantities of reactants and products are stable – their ratio does not change – a chemical reaction is... View Article
What Is Capillary Method
Small blood vessels linking lungs and veins are capillaries. Throughout the body, these blood vessels deliver oxygen and nutrients to... View Article
Which Ion Liberates The Most Energy On Hydration
The limited scale and elevated charge of the Be2+ ion. It has high polarising ability, thus, and can attract many... View Article
Is Inductance A Function Of Frequency
The impedance of the inductor rises while the frequency increases, whereas the impedance of the parasitic capacitor reduces, such that... View Article
