math p3 mj07 help~

[alevel4a]

mj 07 question 5 b.
please help.

 

[msk]

u mean 5 ii)
put the value of Rcos(X-a)
take its square and then integrate! put the limits ull get the answer!

 

[trueblue11]

cud u do the same year's no.7 ii), no.9 ii) n 10 ii) ?? HeLp

 

[WellWIshER]

guys do we have to show full steps in rcos(x-a)???

i just do it in 2 steps and da marks r like 3 -4??!!!!

 

[utsav156]

@wellwisher no u dont need to show everything 2 steps is ennough for that

 

[utsav156]

cud u do the same year's no.7 ii), no.9 ii) n 10 ii) ?? HeLp

for 9 II use the normal of the plane ABC AND the distance ab the use the formula!!!