sin(45º+θ)−cos(45º−θ) Solution From the trigonometric identity we know that sin(α+β)=sin(α).cos(β)+cos(α).sin(β) cos(α–β)=cosα.cosβ+sinα.sinβ We will expand using these identities sin(45º+θ)−cos(45º−θ) =>sin45ºcosθ+cos45ºsinθ−cos45ºcosθ−sin45ºsinθ On... View Article
The point where the line or curve crosses the axis of the graph is called intercept. If a point crosses... View Article
Least Common Multiple(LCM) is a method to find the smallest common multiple between any two or more numbers. LCM denotes the... View Article
Let us assume the potential of each small drop = Kq/r = V The volume of n (here 27 small... View Article
Mean Mean is the most commonly used measure of central tendency. It actually represents the average of the given collection... View Article
In Δ FDC and Δ FBA, ∠FDC = ∠FBA [As DC || AB] ∠DFC = ∠BFA [common angle] Hence, ∆FDC... View Article
Given The radius of the ring, r = 2 mMass of the ring, m = 100 kgVelocity of the hoop, v = 20 cm/s = 0.2... View Article
Probability is the measurement of chances – the likelihood that an event will occur. If the probability of an event... View Article
To find the midpoint of the straight line in a graph, we use this midpoint formula that will enable us... View Article
Given A is an acute angle in a right △ABC, right-angled at B Find out We have to determine the value... View Article
Given M = 1.44 Am2 Find out We have to determine the position of the neutral point Solution We know that... View Article
Malus’ law states that the intensity of plane-polarized light that passes through an analyzer varies as the square of the... View Article
A quadratic equation is an equation of degree 2, meaning that the highest exponent of this function is 2. The... View Article
Acceleration is defined as the rate of change of velocity with respect to time. Acceleration formula is given as: \(\begin{array}{l}acceleration... View Article
Given According to the given details Electric field from distance = 100 N/mR = Radius = 20m r = 10cm... View Article
The refractive index is the measure of bending of a light ray when passing from one medium to another. It... View Article
A projectile is any object thrown into space upon which the only acting force is gravity. The primary force acting... View Article
The correct answer is (d) kπλ According to the given data the total charge on the half ring is πRλ.... View Article
The correct option is B (n+1/n)f Magnification refers to the increase in image size created by spherical mirrors in comparison to the... View Article
A hemisphere shell is uniformly charged positively. The electric field at a point on a diameter away from the centre... View Article
