Maths Ext 1 Past Paper Q NSB 2022 (1 Viewer)

[krypticlemonjuice]

Can someone please show me their full solutions to this q, particular (ii) and afterwards

 

[howcanibesmarter]

View attachment 38682

Can someone please show me their full solutions to this q, particular (ii) and afterwards

i have solutions to 3 n 4 don't know how to get 2 either

avg for this test (excluding 4u studentd) was 50%

 

[howcanibesmarter]

u still want it? (excl 2 tho)

 

[carrotsss]

I’ll do the rest in a sec

 

[hmim]

u still want it? (excl 2 tho)

yes pls !

 

[hmim]

View attachment 38688View attachment 38689


I’ll do the rest in a sec

thank you very much!

 

[carrotsss]

Sorry forgot to send it

Part 4 is kinda weird, idk how to show that 2θ-α=90 is the maximum so I checked the solutions and they just state that 2θ-α=90, so ig you can use that and then the rest is trivial from there

 

[krypticlemonjuice]

Sorry forgot to send it
View attachment 38690
Part 4 is kinda weird, idk how to show that 2θ-α=90 is the maximum so I checked the solutions and they just state that 2θ-α=90, so ig you can use that and then the rest is trivial from there

Thanks so much!

 

[unofficiallyred12]

Sorry forgot to send it
View attachment 38690
Part 4 is kinda weird, idk how to show that 2θ-α=90 is the maximum so I checked the solutions and they just state that 2θ-α=90, so ig you can use that and then the rest is trivial from there

for part 4, use product to sum on the numerator