Qualification > Math
maths paper 4 help
Q80BOY:
--- Quote from: fahadali on May 17, 2009, 04:48:29 pm ---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 ?
--- End quote ---
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:
--- Quote from: sweetsh on May 17, 2009, 04:57:57 pm ---Some old horses can always hear their owners' arriving.
--- End quote ---
waa ???
fahadali:
--- Quote from: Q80BOY on May 17, 2009, 04:56:34 pm ---
--- Quote from: fahadali on May 17, 2009, 04:48:29 pm ---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 ?
--- End quote ---
1. round it to 1 or 2 decimal points
2. see the attched image, sin = opp / hyp
cos = adj / hyp
tan = opp / adj
--- End quote ---
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?
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