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# Maths Exponential and Logarithms HELP please!!! watch

1. Please help me with ln sin x = -ln sec x, in the interval 0 < x < 90 degrees

Thank you
2. I've figured it out already
3. (Original post by Selinaloh)
Please help me with ln sin x = -ln sec x, in the interval 0 < x < 90 degrees

Thank you
is this c3 or c4? what exam board?
4. This is a nice question that reduces down to sin x= cos x
5. (Original post by joyoustele)
is this c3 or c4? what exam board?
I wasn't quite sure. It was given part of my c3 assignment from Edexcel.
6. (Original post by Selinaloh)
I wasn't quite sure. It was given part of my c3 assignment from Edexcel.
That's a lovely question bit sneaky but I like it
7. (Original post by Selinaloh)
I wasn't quite sure. It was given part of my c3 assignment from Edexcel.
Ah okay.
8. (Original post by joyoustele)
is this c3 or c4? what exam board?
ln sin x = - ln sec x
ln sin x ln sec x = 0
ln ( sin x • sec x ) = 0
ln ( sin x /cos x ) = 0
sin x / cos x = e^0
tan x = 1
x = 45 degrees

Hope that this helps
9. (Original post by M4cc4n4)
That's a lovely question bit sneaky but I like it
Lol, you're like my maths teacher 😂😂
10. (Original post by Selinaloh)
Lol, you're like my maths teacher 😂😂
It is a good question as it tests your C2 aswell as your C3
11. (Original post by M4cc4n4)
It is a good question as it tests your C2 aswell as your C3
Indeed. I feel that I have to keep refreshing theory with all the previous modules.

There was also one occasion where I had to complete a Poisson distribution question that included some normal distribution.
12. (Original post by Selinaloh)
ln sin x = - ln sec x
ln sin x ln sec x = 0
ln ( sin x • sec x ) = 0
ln ( sin x /cos x ) = 0
sin x / cos x = e^0
tan x = 1
x = 45 degrees

Hope that this helps
yep
13. (Original post by Selinaloh)
Indeed. I feel that I have to keep refreshing theory with all the previous modules.

There was also one occasion where I had to complete a Poisson distribution question that included some normal distribution.
Ah is that S2? I have only done S1 so I don't know any S2 stuff but I found S1 to be quite a good Applied Module
14. (Original post by M4cc4n4)
Ah is that S2? I have only done S1 so I don't know any S2 stuff but I found S1 to be quite a good Applied Module
Yeah, the s2 would be introducing more distributions. Guarantee that u may like it more than S1 . Even my statistics teacher was so enthralled that he jumped to teaching s2 first; I felt that he didn't want to be teaching C3 ( leaving it for my other maths teacher to do it).

Hope that didn't confuse u. I may have rambled a bit. 😅

There is some intergration in ch3 if you would be considering taking the s2 module. Not too bad so far into the course.
15. (Original post by Selinaloh)
Yeah, the s2 would be introducing more distributions. Guarantee that u may like it more than S1 . Even my statistics teacher was so enthralled that he jumped to teaching s2 first; I felt that he didn't want to be teaching C3 ( leaving it for my other maths teacher to do it).

Hope that didn't confuse u. I may have rambled a bit. 😅

There is some intergration in ch3 if you would be considering taking the s2 module. Not too bad so far into the course.
Can't Normal Math and school only allows M1 and S1 for us. But S1 went well in the summer so hopefully so will m1
16. (Original post by M4cc4n4)
Can't Normal Math and school only allows M1 and S1 for us. But S1 went well in the summer so hopefully so will m1
Ahh. There were some of my friends who decided to take D1 rather than S2. Whole lot of different combos.
I bet you will do amazing in M1.
17. (Original post by Selinaloh)
Ahh. There were some of my friends who decided to take D1 rather than S2. Whole lot of different combos.
I bet you will do amazing in M1.
Hopefully, don't have any GCSE Mechanics as I didn't do GCSE FM, I do have A level physics though so should be grand.
18. (Original post by M4cc4n4)
Hopefully, don't have any GCSE Mechanics as I didn't do GCSE FM, I do have A level physics though so should be grand.
Wish u all the best
19. (Original post by Selinaloh)
Wish u all the best
20. (Original post by M4cc4n4)
Cheers 👍

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