# bit of trig stuffWatch

Announcements
#1
Hiya Mathematicians!

Could someone fill out the missing steps for me please thanks.

into

I've done it before but can't do it now, just one of those days :s Thanks
0
11 years ago
#2
. Rearrange this.
0
11 years ago
#3
(Original post by Plutoniummatt)
Hiya Mathematicians!

Could someone fill out the missing steps for me please thanks.

into

I've done it before but can't do it now, just one of those days :s Thanks

Now rearrange...
0
#4
cheers guys....
0
11 years ago
#5
cos(2t)=cos^2(t)-sin^2(t) so 8cos(2t)=8c^2-8s^2 and 8=8c^2+8s^2
0
11 years ago
#6
Spoiler:
Show
Let so you have
Using you get

and thus

multiply both sides by 8 et voila.
0
11 years ago
#7
How sad is that, it's 10 past midnight and 4 of us lot replied within two minutes.
0
11 years ago
#8
It's Saturday night and ... I'm doing maths.
0
11 years ago
#9
(Original post by Glutamic Acid)
It's Saturday night and ... I'm doing maths.
I'm working through the vectors chapter in my FP3 book
0
#10
it's sunday morning and FP3 is tomorrow, for AQA anyways I just got back form pub....rofl prolly why i couldnt even convert a bit of trig
0
11 years ago
#11
Hehe, not until Friday for me, FP1 is 2moz!
0
11 years ago
#12
(Original post by Glutamic Acid)
It's Saturday night and ... I'm doing maths.
Surprisingly enough, I'm not. I was doing some FP1 about an hour ago, though.
0
11 years ago
#13
(Original post by IChem)
Hehe, not until Friday for me, FP1 is 2moz!
****, it's tomorrow now isn't it! well it's afternoon, so can afford a bit of a lie-in, which is always good.
0
#14
i got sunday (today) off work to do FP3....-.- lol, plus i got the big synoptic phyisics paper on tuesday
0
11 years ago
#15
(Original post by Plutoniummatt)
it's sunday morning and FP3 is tomorrow, for AQA anyways I just got back form pub....rofl prolly why i couldnt even convert a bit of trig
Edexcel for the win!
0
11 years ago
#16
(Original post by tommmmmmmmmm)
How sad is that, it's 10 past midnight and 4 of us lot replied within two minutes.
Yeah we should totally all kill ourselves.
0
#17
(Original post by Audrey Hepburn)
Edexcel for the win!

Edexcel don't give many past papers or mark schemes for my physics course
0
11 years ago
#18
(Original post by Plutoniummatt)
Edexcel don't give many past papers or mark schemes for my physics course
Not for Physics - AQA for the win for Physics
0
#19
(Original post by Audrey Hepburn)
Not for Physics - AQA for the win for Physics
Damn my school
0
X

new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### University open days

• University of Bristol
Wed, 23 Oct '19
• University of Exeter
Wed, 23 Oct '19
• University of Nottingham
Wed, 23 Oct '19

### Poll

Join the discussion

Yes I know where I'm applying (138)
61.61%
No I haven't decided yet (50)
22.32%
Yes but I might change my mind (36)
16.07%