If sin 28° = 15/17 , then tan 62° = ?
sin 28° = 15/17 = perpendicular/hypotenuse So perpendicular = 15 & hypotenuse = 17 so base = 8 But for angle 62° which is complimentary of 28°, perpendicular = 8 & base = 15. So tan 62° = perpendicular/base = 8/15 Alternate Method sin 28° = 15/17 or cos (90°-28°) = 15/17 or cos 62° = 15/17 -----(1) Squaring on both sides, we will get cos2 62° = 225/289 or (1 - sin2 62°) = 225/289 or sin2 62° = 1 - 225/289 = 64/289 = 
So sin 62° = 8/17 ----(2) Hence tan 62° = sin62°/cos62° = =
The income of ‘A’ increases by 10% every year. If his income 2 years hence from now will be Rs. 39930, then find his income a year before from now.<...
Out of the total number of players, 100/3 % are in hotel X and the remaining are in hotel Y. If 20 players from hotel Y are shifted to hotel X, then the...
In an election, two candidates A and B participated. 2⁄5 of the voters promised to vote for A and rest promised to vote for B. On the voting day 25% o...
A labour works 40 hr per week and he earn Rs. 6400 as wages. If his per hour wages increase by 50% and duration of work reduced by 37.5%. find the %...
The total strength of school A is 30% more than that of school B. In school A and B, out of total number of students, 20% and 35% respectively are girls...
Sunita scored 434 marks in a test and failed by 6 marks. If the passing marks of the test is 25%. What is the maximum mark of the test?
If y exceeds x by 15 % then x is less than y by what percent?
In a company interview test, 65% of the students passed in the first round, and 55% passed in the technical round, while 15% of students failed in both ...
A student multiplied a number by 3/5 instead of 5/3, What is the percentage error in the calculation ?
...Ajay spent 30% of his monthly income on rent and 44% of the remaining on food and the rest amount is saved by him which is Rs. 2548, then find the month...
