2016年11月9日 · 1 Unit circle --> cos (5pi) = cos (pi + 4pi) = cos pi = - 1

2015年9月8日 · Now cos 2theta = cos pi/5 = 1 - 2sin^2 theta, gives the result. Trigonometry . Science

2016年7月21日 · f' (x)=-5*sin x* cos^4 x We start from the given f(x) =cos^5 x f' (x)=5*cos^(5-1) x* d/dx(cos x) f' (x)=5*cos^4 x*(- sin x) f' (x)=-5*sin x* cos^4 x God bless....I hope the explanation …

2014年12月16日 · What is the integral of #cos^5(x)#? Calculus Techniques of Integration Integration by Trigonometric ...

2014年8月19日 · For this, we will need the Chain rule. The chain rule states that when confronted with a function f(x) = g(h(x)), our derivative f'(x) = (h'(x)) g'(h(x)). Using this rule, along with the …

2016年5月15日 · cos^8(x)/8-cos^6(x)/6+C Recall that through the Pythagorean Identity sin^2(x)=1-cos^2(x). Thus, sin^3(x)=sin(x)sin^2(x)=sin(x)(1-cos^2(x)). Substituting this into the …

2015年10月29日 · Recommended: learn this pattern. To evaluate int sin^mxcos^nx dx where m,n are positive integers and at least one of m,n is odd. Pull off one from the odd power. (If both …

2015年4月14日 · So, as we are given #cos A = 5/13#, it means that. in this specific right-angled triangle, the side adjacent to #A = 5 and "the hypotenuse " = 13# Using Pythagoras' Theorem. …

2015年9月21日 · -5sinxcos^4x By application of the power rule, which states the derivative of a function to a power equals the power times the function raised to one less than the given …

2016年3月16日 · Here the most elegant solution I found in: http://math.stackexchange.com/questions/7695/how-to-prove-cos-frac2-pi-5-frac-1-sqrt54