2(sin 6+cos6) - 3(sin4+cos4)+1 = 0, Mathematics

2(sin 6?+cos6?) - 3(sin4?+cos4?)+1 = 0

Ans:    (Sin2?)3  + (Cos2?)3-3 (Sin4?+(Cos4?)+1=0

Consider (Sin2?)3  +(Cos2?)3

⇒(Sin2?+Cos2?)3-3 Sin2?Cos2?( Sin2?+Cos2?)

= 1- 3Sin2? Cos2?

Sin4?+Cos4?(Sin2?)2+(Cos2?)2

= (Sin2?+Cos2?)2-2 Sin2? Cos2?

= 1- 2 Sin2? Cos2?

= 2(Sin6?+Cos6?)-3(Sin4?+Cos4?) +1

= 2 (1-3 Sin2? Cos2?)-3 (1-2 Sin2?+Cos2?)+1

 

Posted Date: 4/9/2013 1:51:53 AM | Location : United States







Related Discussions:- 2(sin 6+cos6) - 3(sin4+cos4)+1 = 0, Assignment Help, Ask Question on 2(sin 6+cos6) - 3(sin4+cos4)+1 = 0, Get Answer, Expert's Help, 2(sin 6+cos6) - 3(sin4+cos4)+1 = 0 Discussions

Write discussion on 2(sin 6+cos6) - 3(sin4+cos4)+1 = 0
Your posts are moderated
Related Questions
Consider the following parlor game to be played between two players. Each player begins with three chips: one red, one white, and one blue. Each chip can be used only once. To beg

what is the formula to find a sequence on a string of numbers?

1.A=the set of whole numbers less tan 4 ? 2.B=the set of prime numbers less than 19 ? 3.C=the set of first three days of week?

If sec A = x+i/x, prove that sec A + tan A = 2x or 1/2x

Fundamental Theorem of Calculus, Part I If f(x) is continuous on [a,b] so, g(x) = a ∫ x f(t) dt is continuous on [a,b] and this is differentiable on (a, b) and as,

If 967.234 is divided by 10, how will the decimal point move? It will move one place to the left. While dividing by multiples of 10, the decimal point is moved to the left acco

A rectangles lenth is (x+4) and width is (x+3).By adding binomials give its perimiter

Ask questioOn average, Josh makes three word-processing errors per page on the first draft of his reports for work. What is the probability that on the next page he will make a) 5


1+3+5+7+9+11+13+15+17+19