What formulas other than sine, cosine and tangent must you learn off by heart that are not in the tables book in your exam?

granners
you dont actually need to learn them off since they are in the log book aswell. if i can remember at junior cert all relevant formulas are in the log book

SryanBruen
Wait what.... my teacher told us we had to learn them off by heart

SryanBruen
You do have to learn off sine, cosine and tangent granners. Like for example, tangent is the opposite divided by the adjacent.

JackW
Tan cos and sin are on pg16 of the formulae and tables

SryanBruen
Yeah I know them are but it doesn't know, how do you work out tan, cos and sin such as what sides or angles (adjacent, opposite or hypotenuse)

SryanBruen
show*

granners
Its on page 16 of the log book, but it isn't written as you would learn it off

Anna34xo
Just remember SOH CAH TOA  sin:opposite over hypotenuse , cos:adjusent over hypotenuse and tan: opposite over adjusent..... Hope that helps, that's how I remember it, it's kinda catchy :))

SryanBruen
Thanks Anna34xo

Brian96
Silly Old Harry , Caught A Herring , Trawling Off America
sin=opp/hyp cos=adj/hyp Tan=opp/adj

JackW
I think the only one is the volume and surface area of a hemisphere as well as the flat surface area of 3D shapes

barcelona
oh hell another hour of algebra

Online
I was told we don't have to learn them off by heart because the formula sheet is given to you when you take the exam

SryanBruen
Online there is still some you have to learn like JackW gave some examples ^

Me
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