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L.H.S.=cos 12+cos 60+cos 84=cos 12+(cos 84+cos 60)=cos 12+2.cos 72 . cos 12=(1+2sin 18)cos 12=(1+2.(√5 -1)/4)cos 12=(1+.(√5 -1)/2)cos 12=(√5 +1)/2.cos 12 R.H.S=cos 48+cos 24=2cos 36. cos 12=2.(√5 + 1)/4)cos 12=(√5 +1)/2.cos 12 L.H.S = R.H.S
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Two boats leave the same port at the same time. One travels at a constant speed of 30 km/hr at a bearing of 50° and the other on a bearing of 110° at a constant speed of 26 km/hr.
If the roots of the equation (a-b) x 2 + (b-c) x+ (c - a)= 0 are equal. Prove that 2a=b+c. Ans: (a-b) x 2 + (b-c) x+ (c - a) = 0 T.P 2a = b + c B 2 - 4AC = 0
Well, my uncle want me to tutor him in mathematics. But, the problem is I don''t know what he already knows about math. It for his Compass Test when he go back to school in the spr
Differentiate following. f ( x ) = sin (3x 2 + x ) Solution It looks as the outside function is the sine & the inside function is 3x 2 +x. The derivative is then.
Define Points, Lines, and Spaces Points, lines, and planes are known as undefined or primitive terms. These are the most significant and fundamental concepts in the study of geom
in triangle abc ab=ac and d is a point on side ac such that bc*bc=ac*cd. prove that bc=bd
(a) Derive the Marshalian demand functions and the indirect utility function for the following utility function: u(x1, x2, x3) = x1 1/6 x2 1/6 x3 1/6 x1≥ 0, x2≥0,x3≥ 0
what is o.44 as a simplified fraction
Probability of A is 85% Probability of B is 45% Probability A and B 56% What is the probability of not either A or B?
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