e cosl – i e™ sin 1 + e¯ cos 1 - i e- sin 1 2 e cosl + i e™ sin 1 – e- cos 1 + i e¯I sin 1 -TT 2 e cosl – i e sin 1 + e™ cos 1 + i e¯I sin 1 e cosl – i e™ sin 1 + e-" cos 1 + i e- sin 1 2

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A: Solution :-

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A: given differential equation is  9D3+12D2+13D+10y=0            (i) Solution of the Homogeneous…

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A: Topic = Trigonometry

Q: 8. If sinx = , x is in quadrant II, then the value of cos2x is %3D 17 b) -161 30 161 353 a) 289 c)…

A: Given : sin x = 817 x is in quadrant II.     To find the value of cos 2x.

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A: sin17π6=cosπ2-17π6=cos-7π3=cos7π3=cosπ3=12        cos-210∘ =cos210∘ =-32

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A: Follow the procedure given below.

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Q: If, Sec t-1/sec t +1 = A-cos t/A+cos t Then A =

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A: Recall: sin (2θ)= 2 sinθ cosθ sinθ cosθ= tanθ cos2θ+sin2θ=1

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Q: 2T d) f(x)=5 sin (x+1)+2 e) f(x) = -2 cos 2(x+ 1) + 1_ 17. Find the rule of the sinusoi

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