Question
After selling 45% of the items,
Neha is left with 30 fewer than 80% of the number of items she initially had. Find the number of items sold by Neha.Solution
ATQ,
Let the total number of items Neha had be ‘x’ According to the question, 0.55x = 0.8x – 30 Or, x = 30/0.25 = 120 Therefore, number of items sold by Neha = 0.45x = 54
If sin x + cos x = √2 sin x, then the value of sin x - cos x is:
If A lies in the first quadrant and 6 tan A = 5, then the value of 8 sin A−4 cos A / cos A+2 sin A is :
If x+ 1/x = 2cosθ, then the value of x³+ 1/x³ is
If sin5A = cos(2A+20°), then what is the value of A? Given that 5A is an acute angle.
If sec a + tan a = 3, find the value of sin a.
If sec(2A + B) = 2 and cos(A + B) = (1/√2) , find the value of {sec 2B + tan (A + B) } given that 0o < A, B < 90o
- If sin(A + B) = 1/2 and cos(A + 2B) = √3/2, where 0° < A, B < 90°, then find the value of tan(2A).
If α means +, β means -, ɣ means x, θ means ÷ then 30 θ 10ɣ 5α 10β20 is
If cot8A = tan(A+8˚), find the value of A? Given that 8A and A+8 are acute angles.
sin2 9 ° + sin2 10 ° + sin2 11 ° + sin2 12 ° + ……… + sin2 81 ° = ?
...
Relevant for Exams:
