Page 77 - Math Grade 11 (Advance)

PROEUS DARA

2
n. 2cos x- cosx + 1 :s; 0 ntl [0, lt]
"' 1
2
2. 2sin x-:- sinx-] >0 ntl [0, lt]
smx '1
?1. s~nx- cosx + 1 > 0 '1
smx+ cosx-1

2
2. n:tHLN1!1HuYnU 2sin\-I7sin x+7sinx+8 = 0 '1
4. ~r:l§JfUYnU cos2x-(2m+ l)cosx+m+ 1 = 0 (1)

?1. hlnJlfU£J]1 (sinx-2)(sinx-~) tsitrntH~H [0, 2Jt] '1

m. ~nNMtHYruta1fUYnU (E) '1
1 ..,

. . 3
l . 2 . 2 4 { . 3 . 0 l x-y = 6
_ smx + smy = 2 cos x- cosx + siny = 0 -:-1_-_ta_n_x = tany
3
1 + tanx
n. 2. ?1. '1
lt
sm x- smy + cosx =
5
sm x+ sm y =
l+cosA 2a+c
1 + cosB = 2a - c '1 ,

8. ~ A, B, C tS !:lABC 'i:Hli'i:nS A+C = B '1
1 w 2

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