text: see dude u don't need to recall the table i teach u a style to make it easily\n\nNOTE:- tan=sin/cos    \nNOTE:- COSEC=1/SIN , SEC=1/cos , COT=1/tan\n\n       SINE                 \nSin 0  =  0/4  =0                \nSin 30 =  1/4  =1/2       \nSin 45 =  2/4  =1/√2  \nSin 60 =  3/4  = √3/2  \nSin 90 =  4/4  =1         \n\nCOS 0  =  4/4  =1\nCOS 30 =  3/4  =√3/2\nCOS 45 =  2/4  =1/√2\nCOS 60 =  1/4  =1/2\nCOS 90 =  0/4  =0\n\nTAN 0  =  0\nTAN 30 =  1/√3\nTAN 45 =  1\nTAN 60 =  √3\nTAN 90 =  1\nSee what i am doing is writing the degrees then below sin i am writing the numbers from 0 to 4 accordingly.then i am dividing each number (i.e. numbers from 0 to 4)by 4.And lastly i am square rooting the number.For example,Let's have a look at the sin 60 degree the number i take is 3 then i divide 3 by 4 (actually keeping the sum in that form makes easy to work with.by that form i mean do not convert it into decimals.Let it keep in the fractional form 3/4)  \nthen i am rooting the number which results as follows:\n√(3/4)=√3/√4\ni keep √3 in it's form but i root up 4 which results to 2 (√4=2)\nThus sin 60 degree is √3/2\n\nAND COS COMES JUST THE OPPOSITE OF SINE \nSEE THE CHART SIN 0 =COS 90 , SIN 30=COS 60 ,SIN 45=COS 45 , SIN 60=COS 30 , SIN 90=COS 0.\n\nso if u want to convert sin 30 degree to cos then u have to apply this formula Sin(90-30)=COS 60 \n\n\n NOTE=TAKE (90-x)=y BECAUSE SIN(90-x)=COS x IS WRONG.X is the degree of SIN and if x is also used in case of cos it does mean COS x=SIN x BECAUSE x IS THE VALUE OF SIN DEGREE\nFOR EXAMPLE, HERE I TAKE X=30\nSIN(90-30)=COS 30\nDO THIS SUM TELL THAT THIS SUM MEANS TO SAY :\nSIN(90-30)=COS 60\nSO SIN=30 AND COS =60\nthen u see these are the other formulas of this kind \nSIN(90-X)=COS Y\nCOS(90-X)=SIN Y\nCOSEC(90-X)=SEC Y\nSEC(90-X)=COSEC Y\nCOT(90-X)=TAN Y\nTAN(90-X)=COT Y