Maths C2 discussion!! :)

[abdelrahman hisham]

I did a stupid mistake in calculating the length of the hypotenuse so i got a wrong answer its supposed to be 20. Btw how many marks did this part have???

 

[cardude456]

I did a stupid mistake in calculating the length of the hypotenuse so i got a wrong answer its supposed to be 20. Btw how many marks did this part have???

3 marks i think

 

[bas007]

Okayy thank you so is what i said correct??? i got 12.1

for the length PT I got 20m as I assumed the center of the circle was (-5,9) found the distance from Center C to P which was 20.612m then used Pythagoras 425-25 = 400 so pt is 20

 

[bas007]

3 marks i think

what did you lot get for the Logs question?

 

[abdelrahman hisham]

Yea it is 20 how many marks did this part have i mean finding pt??

 

[abdul aziz123]

3 marks i think

angle question what did u get? i got 30 and 300 ! last part !

 

[abdelrahman hisham]

What angle question you mean the sin cosine question???

 

[bas007]

angle question what did u get? i got 30 and 300 ! last part !

for the 4cos2+2cos-1 . You use quadratic formula cosx=0.39 and -0.89 or something then do the normal CAST diagram for each I got 4 values

 

[abdelrahman hisham]

Yea i got the same but what 30 and 300 is he talking about??

 

[bas007]

Yea i got the same but what 30 and 300 is he talking about??

what you get for logs?

 

[abdelrahman hisham]

I dont remember the question at all remind me of it.. And what is the angle question hes saying he got 30 and 300 do u knw anything about this??

 

[bas007]

I dont remember the question at all remind me of it.. And what is the angle question hes saying he got 30 and 300 do u knw anything about this??

no he is probably wrong, and we had to find y in terms of a and value of x

 

[saba1996]

I dont remember the question at all remind me of it.. And what is the angle question hes saying he got 30 and 300 do u knw anything about this??

i dont recall any 30 or 300... i got 4 values for this....

 

[abdelrahman hisham]

Yea i remembered i got y equals a power 5 divided by 8 and for the x values i really dont remember but say yours i may rememver mine if they are similar

 

[mohamad yassine]

i am sure area of graph is 148/3 and PT 20 and garden 260... and perimeter eighty . ....

 

[bas007]

Yea i remembered i got y equals a power 5 divided by 8 and for the x values i really dont remember but say yours i may rememver mine if they are similar

yeah think my x was 11/4

 

[bas007]

i am sure area of graph is 148/3 and PT 20 and garden 260... and perimeter eighty . ....

well those answers are correct but you have to give most to 1 dp and if you rounded wrong you will loose marks.

 

[abdelrahman hisham]

Yup i remembered i got that value for x (Y) and btw how many marks did pt part have fo u knw???

 

[abdul aziz123]

What angle question you mean the sin cosine question???

yup that one i got cos o.5 :/

 

[mohamad yassine]

some of my friends are telling me that the equation of circle they have assumed that the centre is exactly to the left of the point (0,9)

when a circle is touching thr y axis at one point it means that this line will be diameter of circle it cannot be anything else