Mathematics: Post your doubts here!

[Igcse stuff]

thanks!

you're welcome

 

[Igcse stuff]

Hey, can you tell me how to solve Q.6(b)? Which sine rule do we use?

easy,

use

sin52/16.5 = sinX/15.7

now find the value of X from above. The answer you get is the angle

 

[Phoenix Blood]

easy,

use

sin52/16.5 = sinX/15.7

now find the value of X from above. The answer you get is the angle

OMG! Thanks! Sometimes it just never clicks...

 

[Phoenix Blood]

How do i know that it is the x-axis invariant, and if the triangle shears to the left side, the answer will still be the same. Any tips?

 

[Phoenix Blood]

Please help with Q.9,(b),(i) and (ii)

 

[asimkhanfar]

Plane of symmetry help!!

when asked to draw the plane of symmetry of a cuboid, do we draw the plane only on the inside of the shape? how exactly will the answer look?

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s10_qp_23.pdf
question 13 c

 

[saif mahmoud]

i recommend y'all to solve nov as well as jun 13 it has alot of hard questions all VARIANTS!!

 

[Phoenix Blood]

Plane of symmetry help!!

when asked to draw the plane of symmetry of a cuboid, do we draw the plane only on the inside of the shape? how exactly will the answer look?

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s10_qp_23.pdf
question 13 c

 

[Phoenix Blood]

Please help with this answer

Igcse stuff

 

[Phoenix Blood]

9, (b) Please?

 

[***amd***]

Please help with this answer

use the quadratic formula.

 

[Phoenix Blood]

17, (a)
19, (d)

 

[***amd***]

9, (b) Please?

first you have to solve the 2 equations in that 'substitution method' and find the values of a and of b. then put the values in the expression a^2 + b^2

 

[Phoenix Blood]

use the quadratic formula.

But how? Please show

 

[***amd***]

17, (a)
19, (d)

Awesome12, i have to go. would you help him?

 

[Phoenix Blood]

first you have to solve the 2 equations in that 'substitution method' and find the values of a and of b. then put the values in the expression a^2 + b^2

But the substitution method only works if the two integers are having an addition or subtraction sign in the midst of the terms, right?
For eg, a+b=2 and 2a-b=3
Here it is, a+b=6 and a*b=7
So how to solve it?

 

[***amd***]

But how? Please show

Awesome12, show ur awesomeness

 

[Phoenix Blood]

Awesome12, i have to go. would you help him?

Reply whenever you get time, Please

 

[***amd***]

But the substitution method only works if the two integers are having an addition or subtraction sign in the midst of the terms, right?
For eg, a+b=2 and 2a-b=3
Here it is, a+b=6 and a*b=7
So how to solve it?

ab = 7
b=7/a
substituted

 

[***amd***]

Reply whenever you get time, Please

remind me later i have to go for now sorry.