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Sin (x)=cos (x) * tan (x)

doesnt make sense to me

you know that tanx = sinx/ cosx/

substitute the sin cos tan wid their ratios (opp, adj, hyp)

so sub tanx= sinx/ cosx. this yields left side. left side= right side. QED

tanx= sinx/ cos x because tanx by definition is opp/ adj. sinx= opp/ hyp
cos= adj/hyp.

that confused me waay more ^^

just a note
you can use frac{a}{b} in equations to make fractions
ex.
\[\frac{a}{b}\]

work left side separately
work right side separately
show both are equal

\[\tan x = \frac{\sin x}{\cos x}\]

left side :-
sin x = opp/hyp ---------------(1)

Okay, i will take it really slowly.

sinx= opp/ hyp= left side.

take the right side, substitute opp/adj/hyp, simplify and see if u can get the same as left side

\[\frac{ adj }{ hyp }*\frac{ opp }{ adj}\] im really confused :/

keep going, one more step. confusion wil go away

adj/adj = 1

top adj can be cancelled out with bottom adj, and you are left with opp/hyp= sinx

ok so i was almost there \[\sin (x)=\frac{ opp }{ hyp }\]

like that

brb yall meh baby is hungry

from (1) and (2), left hand side = right hand side. so its an identity.

oh ok so how do i write it into words

you wanto write math into words ? hmm

just showing the proof wont do ha ?

no i have to write it into words :(

np, im sure you can conclude :)

yea i think i can :D