Page 75 - Math Grade 11 (Advance)

PROEUS DARA

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=ru~fi =--=-===================

n. cosx + J3 sinx = cos3x

2. sin3x + 2cosx- 2 = 0

1!1. sin2x + tanx = 2
lli. sin5x + cos5x = ,Jicos 13x

3
b. 6sinx-2cos x = 5sin2xcosx
ti. Jscosx-cos2x+2sinx = 0

2. tffHLMt1Hu~Fn~21btLfil~ ~

1- cos2x
n. 1 + cot2x = .::...___,.;-:......;..:.
2
sin 2x
2. cos x + sin x = ]_
6
6
16
1!1. (1- tanx)(l + sin2x) = 1 + tanx
3
lli. 3sin3x- J3cos9x = 1 + 4sin 3x
b. 1 + 3cosx + cos2x = cos3x + 2sinxsin2x

4
ti. cos x + sin6 x = cos 2x

3.tl!l~ti5~fil~ cos2x-(2m+l)cosx+m+l=0 (1) '1

n. ti:IHLMIDtu~fil~ (1) mrnrun m = ~ '1
" "' ... ~ ... rr1 :rt 3:rt
2. ~ntH~ m t!':lrntu<&~tu~fnH:flStitu X t~ltitS'U -2 <X< -2 '1
GV Ae.J " 6IJ

sin(x + y) = ~

n. J2
{ cos(x- y) = 2
2

sinx + siny = ,fi
2.
{ cosx + siny = ,fi

sin(x + y) = cos(x- y)
1!1. '1
{ tanx- tany = 1

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