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x = SinA + CosA … (1) y = SecA + CosecA =1/cosA +1/sinA =(sinA+CosA)/SinA.CosA y = x/SinA.CosA … (2) EQ (1) both sides squaring… x2=1+2sinA.CosA SinA.CosA =(x2-1)/2 Put the value in EQ (2). y =2x /(x2-1) yx2-y =2x y+2x =x2y.
A scored 246 marks in an examination and B got 50 percent marks in the same examination which is 48 marks less than A. If the minimum passing marks in t...
The income of P is 2/5th of the income of Q and income of R is 60% more than the income of Q. Income of Q is Rs.15000 and expenditure of P is...
A man invested all his current month income in starting of a new business in which he spends 30% in advertisement 15% of remaining in furniture 20% of r...
Rajesh spent 47% of his monthly income on food and 53% of the remaining of study. If total monthly savings (after spending on food and study) of Rajesh ...
A number is increased by 45% and then decreased by 30%. What is the overall percentage change (increase or decrease) in the number?
A bag contains 550 coins of 25p denomination and 1100 coins of 50p denominations. If 11% of 25p coins and 22% of 50p coins are removed, the percentage o...
A chair is sold for Rs 720 after giving a discount of 10% on its marked price. The cost price of the chair is Rs 640. If it is sold at the marked price,...
Divya saves 45.5% of her total salary. Express the part of her savings in decimal form.
In a city, the number of persons travelling by bike is 52.5% the number of persons travelling by metro. The number of persons travelling on foot is 60% ...
A gets 34% of the full marks in an exam and fails by 80 marks. B gets 36% of the full marks in the same exam and he also fails by 64 marks. What is the ...
