- Messages
- 3
- Reaction score
- 1
- Points
- 3
We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
Pls guys help me, how to get c (y-intercepy}............ thanx....!!!
ans-:lgc=-o.6
c=0.251
Anyone please solve the following question:
2 cot 2x=5 for 0<=x<=360
I'm getting only two answers, whereas the Redspot Classified book gives four answers.
scouserlfc: Your help will be highly appreciated.
Thanks for your help, but I'm afraid that it's wrong.2 cot 2x = 5
2(cos 2x/sin 2x) = 5
use compound angle formulae for cos 2x = 1-2 sin^2 x
and sin 2x = 2 sin x cos x
replace in equation and after simplifying, you'll get
2 - 4 sin^2 x = 10 sin x cos x
2 sin^2 x + 5 sin x cos x = 1
sin x (2 sin x + 5 cos x) = 1
either sin x = 1 (look for sin^-1)
or 2 sin x + 5 cos x = 1 (divide by cos x to obtain equation in tan x and solve)
hope it's good
Anyone please solve the following question:
2 cot 2x=5 for 0<=x<=360
I'm getting only two answers, whereas the Redspot Classified book gives four answers.
scouserlfc: Your help will be highly appreciated.
Yeah I rearranged the equation into tan 2x = 0.4.....used the tan2x identity and derived the four answers: 10.9, 100.9, 190.9 and 280.9.Have u tried using the tan2x identity after converting cot2x to 1/tan2x because that would form a quadratic equation and u should get 2 answers
And also how did u do it urself ????
Re: O'level Maths, Addmaths and Statistics help available he
Can someone solve this question for me?
Two ships, A and B, leave their ports simultaneously at 12 00 hours. The ports are 104 km apart with one port due west of the other. The speeds and directions of the two ships are shown in the diagram, where tan x = 3/4 and tan y = 12/5. Find:
a) The speed and direction of the velocity of A relative to B;
b) The time at which A is due south of B and the distance between A and B at this instant;
c) The distance between the two ships at 17 00 hours.
Thanks in advance!
Guys what about this one 8siny+ 3 secy=0. Can you solve it without using 2sinxcosx= sin2x???
You need to specify which one is angle x and which one is angle y. Is x the angle for A or the angle for B??
Yeah but you'll be getting 8sinycosy=-3. So can you solve that WITHOUT USING any double angle identities???Convert the sec x into 1/cos x and solve.
For almost 10 years, the site XtremePapers has been trying very hard to serve its users.
However, we are now struggling to cover its operational costs due to unforeseen circumstances. If we helped you in any way, kindly contribute and be the part of this effort. No act of kindness, no matter how small, is ever wasted.
Click here to Donate Now