If cos θ + sin θ =m, sec θ + cosec θ =n, what is m/n?

The number of mainas and parrots in an aviary is in the ratio of (4x + 5) : 4x. If 25 mainas and 10 parrots are added to the aviary, then, the ratio would change to 5: 3. How many mainas are there in the aviary at initial?

The average weight of A B and C is 40 kg . if the average weight of A and B be 48 kg and that of B and C be 45 kg , then find the weight of B ?

The ratio between the three angles of a quadrilateral is 1:6:2 respectively. The value of the fourth angle of the quadrilateral is 45°.What is the difference between the value of the largest and smallest angles of the quadrilateral?

The simple interest of 7 years of money is Rs. 1750. If the rate of interest was 2% more per annum, how much interest would have been higher?

Find the value of given expression. 

[76 – {90 ÷ 5 ⨯ (24 – 36 ÷ 3) ÷ 3}] 

Bhuvnesh has drawn an angle of measure 45⁰7’ when he was asked to draw an angle of 45⁰. The percentage error in his drawing is