You are not logged in.
#1 2009-01-04 18:29:33
- ganesh
- Moderator
Offline
Matriculation level - #n+4
1. The angles of elevation and depression of the top and bottom of a light-house from the top of a building 60 meters high are 30° and 60° respectively.
(i) Find the difference between the heights of the light-house and the building.
(ii) Find the distance between the light-house and the building.
2. Find the mean of the first n natural numbers.
3. Find the median of the following data:
71, 72, 73, 75, 76, 80, 134.
4. All aces, jacks and queens are removed from the deck of playing cards. One card is drawn at random from the remaining cards. Find the probability that the card is a king.
5. If the diameter of cross-section of a wire is decreased by 5%, how much percent would the length have to be increased so that the volume remains the same?
6. The radii of two circles are 19 centimeters and 9 centimeters respectively. Find the radius of the circle which has its circumference equal to the sum of the circumferences of the two circles.
7. (i) Using cos(A-B) = cosA cosB + sinA sinB, find the value of cos 15° .
(ii) Evaluate : cosec² 67° - tan² 23°
8. Find the area of a quadrant of a circle whose circumference is 22 centimeters.
9. Express cos 75° + cot 75° in terms of trignometric ratios of angle between 0° and 45°.
10. The length of a minute hand of a clock is 14 centimeters. Find the area swept by the minute hand in 15 minutes.
Character is who you are when no one is looking.
#2 2009-01-04 22:55:23
- JaneFairfax
- Legendary Member
Offline
Re: Matriculation level - #n+4
Are these questions also for teenagers? 
#3 2009-01-05 23:19:17
- ganesh
- Moderator
Offline
Re: Matriculation level - #n+4
Oh yes, the title says so! I don't know the UK equivalent of Matriculation ( I guess GCSE). Students aged 14-16 normally appear for the examination.
For real challenges, I shall post them separately and name the topic accordingly!
You may test your skills there 
Character is who you are when no one is looking.
#4 2009-01-06 03:01:53
- Daniel123
- Power Member
Offline
Re: Matriculation level - #n+4
If this is equivalent to GCSE, the British education system is rubbish. Here, the trig questions wouldn't be encountered (usually) until AS/A level (16-18).
#5 2009-01-06 22:59:57
- ganesh
- Moderator
Offline
Re: Matriculation level - #n+4
I remember we were asked to make a clinometer (an inclinometer), a simple one, to measure the angle of elevation and hence find the height knowing the base distance. I guess I was 13 then. Soon, I shall post topics in Exercies which 16-18 year olds are expected to know thoroughly to do fairly well in Mathematics!
Character is who you are when no one is looking.