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Is The Set {cos1,cos2,cos3,cos4,...} under

What Is The closure of the set {cos1,cos2,cos3,cos4,...} under usual topology????
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2. asked by Itrat Abbas Mirza
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Is The Set {cos1,cos2,cos3,cos4,...} under usual topology closed??? whatbiis its closure????
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2. asked by Itrat abbas mirza
3. 476 views
If S=1/2^2cos1 + 1/cos1¤cos2+1/2^3 cos1 ¤cos2¤cos2^2 + .......... upto 10 terms . If S= sina(cotb-cotc) where a,b,c€N Then
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2. asked by piyush yadav
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y = 2[cos1/2(f1 - f2)x][cos1/2(f1 + f2)x]let f1 = 16 let f2 = 12 therefore y = 2[cos1/2(16 - 12)x][cos1/2(16 + 12)x] y =
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2. asked by Lola
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Verify that following are identities:1. cos 3t = 4 cos³ t-3 cos t 2. sin 4x = 8 sin x cos³ x-4 x cos x (use a double-angle
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2. asked by PDF
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when solving for all solutions how do I work out this problem: cos4(alpha)=cos2(alpha)and when verifying each identity how do I
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2. asked by bee
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If the radius of a circle is 3960the angle is 1.59 the arc length is 110 how would I find the hypotenuse? I think it is
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2. asked by Amy~
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Which expression is equivalent to (sin x + 1)(sin x − 1)?A. cos2^x B. -cos2^x C. cos2^x + 1 D. cos^2x − 1 E. -cos^2x + 1
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2. asked by Chris
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if in a triangle ABC m angle A=π/2, then value of cos2 A + cos2 B + cos2 C =?
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2. asked by Anand
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45) Prove the following identities. Use a separate piece of paper.a) sec x − tan x = 1−sinx cos x b) (csc x − cot x) 2 =
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