is pi important

From the above observation, we find (i) sin A = cos B where A + B = 90 o \ Sine of an angle = Cosine of its complement sin A = cos (90 - A) o sin 40 o = cos (90 - 40) o = cos 50 o (ii) = tan A (iii) By Pythagoras theorem a 2 + b 2 = c 2..

Similarly c = dk and e = fk (This method is called k-method. It will be freely used in this topic.) If 9x - 11y = 4x + 13y, find (i) , (i..

(i) Linearity (ii) Sensitivity (iii) Signal handling capacity Linearity is determined by how accurately the output of the detector follows the input signal. If the variation in the amplitude of output is proportional to the input amplitude, the detector is said to be linear. The sensitivity i..

i) Kinetic energy of a body moving with a velocity v << c. We know that Here, mc 2 is the total energy and m 0 c 2 is the rest mass energy. Therefore, (mc 2 - m 0 c 2 ) represents the kinetic energy. . This is the same result that we obtain by Newtonian mechani..

The important differences between s and p molecular orbitals are given below: σ Molecular orbitals &pi; Molecular orbitals It is formed by the head-to-head overlap of atomic orbitals along internuclear axis It is formed by sidewise overlap of atomic orb..

i. They protect the heart, large blood vessels and lungs. ii. They bear respiratory muscles, and play an important role in respiration. iii. The last two pairs of ribs protect the kidney..

The similarity of properties such as electronegativity, ionization energy, size etc. between the diagonal elements is the cause of diagonal relationship. For example, on moving from left to right across a period, there is an increase in electronegativity while, moving down in the group there is a ..

Halides - The elements of this group form a variety of halides. The important features regarding the halides are: (i) Since fluorine is more electronegative than oxygen, its compounds with oxygen are called fluorides. For e.g., F 2 O is written as OF 2 and is named as oxygen difluori..

Anomalous Behavior of Oxygen - Like all other first elements of the groups, oxygen also differs from its family members. The anomalous behavior of oxygen is due to its (i) small size (ii) high value of ionization energy and electronegativity (iii) absence of d-orbitals in the valence shell. So..