maths paper 4 help

[fahadali]

Hi

I was wonder when solving the question paper to what correct decimal point should i answer the question ?

e.g: 24.5059595958

p.s: I'm talking about the questions where they don't tell me to what decimal point should i write, which is in most questions XD


the second thing is in trigonometry:

I'm not sure when I can use Sin, Cos, Tan ?

should it be a right angle triangle ?

and the last thing what's the formula for compound interest ?

[vids]

Hi

I was wonder when solving the question paper to what correct decimal point should i answer the question ?

e.g: 24.5059595958

p.s: I'm talking about the questions where they don't tell me to what decimal point should i write, which is in most questions XD


the second thing is in trigonometry:

I'm not sure when I can use Sin, Cos, Tan ?

should it be a right angle triangle ?

and the last thing what's the formula for compound interest ?

soh cah toa
o=opp
a=adj
h=hyp

24.5

[fahadali]

what about compound interest ?

[vids]

P(1+{r/100})^n
p=principle
r=rate of interest
n=no. of years

hope this helps

[vids]

gotta go

[Q80BOY]

Hi

I was wonder when solving the question paper to what correct decimal point should i answer the question ?

e.g: 24.5059595958

p.s: I'm talking about the questions where they don't tell me to what decimal point should i write, which is in most questions XD


the second thing is in trigonometry:

I'm not sure when I can use Sin, Cos, Tan ?

should it be a right angle triangle ?

and the last thing what's the formula for compound interest ?

1. round it to 1 or 2 decimal points

2. see the attched image, sin = opp / hyp
                                   cos = adj / hyp
                                   tan = opp / adj

[sweetsh]

Some old horses can always hear their owners' arriving.

[Q80BOY]

Some old horses can always hear their owners' arriving.

waa 

[fahadali]

Hi

I was wonder when solving the question paper to what correct decimal point should i answer the question ?

e.g: 24.5059595958

p.s: I'm talking about the questions where they don't tell me to what decimal point should i write, which is in most questions XD


the second thing is in trigonometry:

I'm not sure when I can use Sin, Cos, Tan ?

should it be a right angle triangle ?

and the last thing what's the formula for compound interest ?

1. round it to 1 or 2 decimal points

2. see the attched image, sin = opp / hyp
                                   cos = adj / hyp
                                   tan = opp / adj

thanks for the help but what i mean in the tan, does the triangle have to be right angle triangle ?

thank you

[Q80BOY]

no, to use the tan, u need to have values for the opposite and the adjacent

get it?

[angell]

june 2000 q.3 d)iii PLEASE

[fahadali]

no, to use the tan, u need to have values for the opposite and the adjacent

get it?

ya thanks for the help

[care]

In order to use sine, cosine and tangent, you have to have a right-angle triangle.

However, the sine and the cosine rules are applied on non-right-angle triangles.