You are Here: Home >< Maths

# maths help pls watch

1. y=sqrt(x) makes an angle of a with the line y=0
find a
2. (Original post by gomc)
y=sqrt(x) makes an angle of a with the line y=0
find a
Why don't you try plotting the graph and seeing what arises.

Hint:
Spoiler:
Show
Think tangents of
3. (Original post by Zacken)
Why don't you try plotting the graph and seeing what arises.

Hint:
Spoiler:
Show
Think tangents of
so differentiate?
4. (Original post by gomc)
y=sqrt(x) makes an angle of a with the line y=0
find a
Have you written the question properly, because, upon reflection we have that which is surely undefined at - unless, of course the angle is the trivial because the tangent is essentially the y-axis?
5. (Original post by Zacken)
Why don't you try plotting the graph and seeing what arises.

Hint:
Spoiler:
Show
Think tangents of

Whenever there's a thread to do with maths, I could almost guess you'd be the first one to post on it lool
6. (Original post by ravioliyears)
Whenever there's a thread to do with maths, I could almost guess you'd be the first one to post on it lool
Haha, I've got some free time, so I've just come to the maths forum and blaze out a few helping hands.
7. (Original post by Zacken)
Have you written the question properly, because, upon reflection we have that which is surely undefined at - unless, of course the angle is the trivial because the tangent is essentially the y-axis?
yes thats all thats given
and its a non-calc question if that helps
8. (Original post by ravioliyears)
Whenever there's a thread to do with maths, I could almost guess you'd be the first one to post on it lool
Or TeeEm!!
9. (Original post by gomc)
yes thats all thats given
and its a non-calc question if that helps
I actually do think the angle is using my calculus method.

The only other method I can think of is using the tangent formula for angles between lines but certainly isn't a line... what chapter/topic is this question from?

Edit: I'm sorry to have given you the full solution, but I only did so because I was uncertain about the question itself, many apologies.
10. (Original post by Zacken)
I actually do think the angle is using my calculus method.

The only other method I can think of is using the tangent formula for angles between lines but certainly isn't a line... what chapter/topic is this question from?

Edit: I'm sorry to have given you the full solution, but I only did so because I was uncertain about the question itself, many apologies.
i mean non calculator
its a core 1 extension question
no worries haha
11. (Original post by gomc)
i mean non calculator
its a core 1 extension question
no worries haha
In that case, I think the intended method was , so tangent at (0,0) is the y-axis, angle between x-axis and y-axis is 90 degrees. Boom. Done.
12. (Original post by ghostwalker)
Since you want the angle with the y-axis, turn your graph on its side and express x as a function of y. Answer becomes obvious.

Note: You want the angle with the y-axis, and it's not 90.
I'm probably being thick but isn't the -axis?
13. (Original post by Zacken)
I'm probably being thick but isn't the -axis?
Yep - ignore me.

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: November 3, 2015
Today on TSR

### Edexcel GCSE Maths Unofficial Markscheme

Find out how you've done here

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams