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Asked by Kewal

Prove that
sec8A-1/sec4A-1 = tan8A/tan2A
13 years ago

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(1+sec 2A) (1+sec4A) (1+sec8A) = tan8AcotA sec8A-1/sec4A-1=tan8A/tan2A Prove that. (1+sec2A) (1+sec4A) (1+sec8A)=Tan8A×CotA Ax^2+bx=bx^2+a prove that it's roots are rational for all real values of a and b of a^2+b^2=2ab, prove log[(a+b)/2]=1/2(loga+logb) Prove that: (12^13–12^12+12^11)(11^9–11^8+11^7) is divisible by 3, 7, 19, and 37. Prove: Cot x cot 2x - cot 2x cot 3x - cot 3x cot x = 1 IF A+B+C=Π prove that sin(3A)+sin(3B)+sin(3C)=-4cos(3A÷2)cos(3B÷2)cos(3C÷2) Prove: 1^2+2^2+3^2+...+n^2= [n(n+1)(2n+1)]/6 wher: n is natural number prove that cot x tan 2x-1 =sec 2x
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Prove that
sec8A-1/sec4A-1 = tan8A/tan2A

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