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Syllabus

a) 3 b) 4

c) 5 d) none of these

^{2}33-cos^{2}57)/(sin 21-cos 21)=?tan(3pi/11) + 4(sin(2pi/11) = root(11)Q. If x+y=z, then cos

^{2}x+cos^{2}y+cos^{2}z-2cosx cosy cosz is equal to(A) cos

^{2}z (B) sin^{2}z (C) cos(x+y-z) (D) 1Q. cos4x cos8x-cos5x cos9x=0 if

(A) cos12x=cos14x (B) sin13x=0 (C) sinx=0 (D) cosx=0

can we take degrees on grpahs?also. pie

^{c}=pie radians.?^{4}+2x^{2}+101)/(x^{2}+1) for xbelongs to all R no. is equal to???P.S the class is very interesting.Thank you.:)

find sin theta

Solution:-

3 secλ < secλ + secμ + sec∂ < 3sec∂

sir please tell me whyy it becomes 3seclambda

Q.3. Total number of ordered pairs (x, y) satisfying | y | = cos x and y = $\mathrm{sin}{}^{-1}\left(\mathrm{sin}x\right)where\left|x\right|\le 3\mathrm{\pi}$ is equal to:

(A) 2

(B) 4

(C) 6

(D) 8