Without using trigonometric table values evaluate
Sec^ 54-cot^2 36/cosec^2 57-tan^2 33 +2sin^2 38 sec^2 52 -sin^ 45
Question
The ratio of income of two personas 9:7 and the ratio of their expenditure is 4:3 if each of them manage to save 2000 Rs per month. Find there monthly income ?
Angles of a quadrilateral are in arithematic progression .if the product of first and fourth angle and the product of second and third angle are in ratio 27:35 .find the angles of the quadrilateral