General Thoughts: Mathematics Extension 1 (3 Viewers)

[sluggo]

its known that sinx/x = 1

so lim x-> 3 1/(x+2) = 1/5

But sinx/x =1 only for small angles, so it doesn't have the same effect when x-->3

 

[fionaying]

11c x does not equal to -3

 

[spatula232]

I got cot13 and cot15 in the 3D trig Q. THERE'S NO COT ON THE BLOODY CALCULATOR!! HOW CAN I POSSIBLY DO THAT?!?

 

[t_davis9]

I got cot13 and cot15 in the 3D trig Q. THERE'S NO COT ON THE BLOODY CALCULATOR!! HOW CAN I POSSIBLY DO THAT?!?

rip 1 mark

 

[RealiseNothing]

I got cot13 and cot15 in the 3D trig Q. THERE'S NO COT ON THE BLOODY CALCULATOR!! HOW CAN I POSSIBLY DO THAT?!?

tan? lol

 

[turnerloos]

exam was fair imo

 

[kawaiipotato]

I got cot13 and cot15 in the 3D trig Q. THERE'S NO COT ON THE BLOODY CALCULATOR!! HOW CAN I POSSIBLY DO THAT?!?

1/tan or tan(90-theta)

 

[spatula232]

lol

 

[Catz]

Harder than last years paper

 

[Sarthakgarg]

For the projectile question (14aii), I equated x = vtcos(theta) and x = (v^2sin2(theta))/g, as they both equal x.

Then, simplifying on both sides, I get theta = sin-1 (1/√3)

 

[My two cents]

Bloody hell silly mistakes

 

[luhanbby]

hey guys if I got 59/70 is that a band 5? I also wrote root(11/4) for the n value idk if they'll take a mark off for not simplifying to root(11) / 2


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[thomasdo1]

hey guys if I got 59/70 is that a band 5? I also wrote root(11/4) for the n value idk if they'll take a mark off for not simplifying to root(11) / 2


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def b6 m8

I marked myself, fml I got 66/70

I did the 3d trig in radians LOL

 

[SlimiJay]

what does 67/70 align to?

 

[luhanbby]

def b6 m8

I marked myself, fml I got 66/70

I did the 3d trig in radians LOL

you did so well though!! I'm a pretty average 3u kid lmao


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[thomasdo1]

you did so well though!! I'm a pretty average 3u kid lmao


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haha yeah, my schools ranked in the 100's or 200's

 

[eccentricity]

Hey guys, for the projectile motion question, are we supposed to write pi/6 or 5pi/6 if it asks for the angle that the particle makes with the horizontal?

 

[Flop21]

I got cot13 and cot15 in the 3D trig Q. THERE'S NO COT ON THE BLOODY CALCULATOR!! HOW CAN I POSSIBLY DO THAT?!?

cot = 1/tan

 

[Pab]

did so shit fml

 

[Carrotsticks]

cot = 1/tan

Or even easier, cot(x) = tan(90-x).