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The Equation 2 Cos2x2 Sin2x X 2 X 2 Has

Solution: (1) 2 cos2x/2 sin2x = x2 + x-2 (1 + cos x)(1 - cos2x) = x2 + (1/x2) Let f(x) = (1 + cos x)(1 - cos2x) = (1 + cos x)2(1 - cos x)... View Article

If Sin A Sin B Sin C 3 Then Cos A Cos B Cos C Is Equal To

Solution: (4) sin A + sin B + sin C = 3 We know that the maximum value of sin is 1. Therefore, sin A = 1, sin B = 1, sin C = 3 (this... View Article

Given A Sin2 Theta Cos4 Theta Then For All Real Value Of Theta

Solution: (2) A = sin2θ + cos4θ = 1 - cos2θ + cos4θ (using the identity sin2A + cos2A = 1) = 1 - cos2θ (1 - cos2θ) = 1 - cos2θ(sin2θ) = 1... View Article

If Tan Thetadfrac43 Then Sin Theta Is

Solution: (2) Given, tan θ = -4/3 We know that tan θ = Opposite/Adjacent and tan is negative in the second and fourth quadrants. sin is... View Article

The Value Of 2cot 2 Pi 6 4tan 2 Pi 6 3cosec Pi 6 Is

Solution: (3) 2 cot2(π/6) + 4 tan2(π/6) - 3 cosec π/6 = 2(√3)2 + 4(1/√3)2 - 3(2) = 2(3) + 4(1/3) - 6 = 6 + (4/3) - 6 = 4/3... View Article

The Value Of Sin 36osin 72osin 108osin 144o Is

Solution: (4) sin 36° sin 72° sin 108° sin 144° = sin 36° sin 72 sin (180° - 72°) sin (180° - 36°) = sin 36° sin 72° sin 72° sin 36° =... View Article

How Do You Find Volume With Fractional Edge Lengths

Edges are defined for three dimensional figures such as cube and cuboid. The volume of these shapes with the given fractional edges lengths is... View Article

What Is The Latin Name Of Sodium

The Latin name of sodium is Natrium, and thus, sodium is denoted with the symbol “Na” on the periodic table. The atomic number of sodium is 11... View Article

How Many Metals Metalloids And Nonmetals Are There In The Third Period Of The Periodic Table

The third period contains eight elements: sodium (Na), magnesium (Mg), aluminium (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (Cl),... View Article

What Is 36 On The Periodic Table

On the periodic table, each element has an atomic number. The number 36 on the periodic table represents the atomic number of an element Krypton.... View Article

How Many Elements Are There In 2019

As of 2019, there are 118 elements in the periodic table. This is a corrected version of a narrative initially published on 2019, January 28. We... View Article

Is Tungsten Heavier Than Gold

Tungsten is an important element since it is heavy and is one of our heaviest metals. The density of gold is 19.30 g/cm^3, and the density of... View Article

What Is The Purpose Of Periodic Table

The primary purpose of the periodic table is to organise elements by their common properties. In particular, the elements in the same column of... View Article

How Many Metals Are On The Periodic Table

Around 92 of the 118 elements in the periodic table are metals. Sometimes, 91 elements are considered as metals. The number of metals is... View Article

Which Period Has The Most Nonmetals

There are 17 nonmetals in the periodic table and period 2 has the most nonmetals. They are: Carbon (C) Nitrogen (N) Oxygen (O) Fluorin (F)... View Article

What Are The First 30 Elements

The first 30 elements of a periodic table are: 1 Hydrogen 11 Sodium 21 Scandium 2 Helium 12... View Article

What Are The 118 Elements

Below table contains the 118 elements: 1 Hydrogen 41 Niobium 81 Thallium 2 Helium 42... View Article

When First Order Derivative Is Positive Then Function Is

If the first derivative of a function is positive, then the graph of the function lies above the x-axis. Negative means the graph of the function... View Article

What Wavelength Looks Like

Wavelength is the distance between identical points in the adjacent cycles of crests of a wave. Below figure shows the shape of a wavelength.... View Article

How Do You Find The Y Intercept With 2 Points

Let (x1, y1) and (x2, y2) be the two given points. Slope of the line passing through the given points is: m = (y2 - y1)/ (x2 - x1) The... View Article