φ & π 13:54 Complex Analysis what is an analytic function【复分析什么是解析函数】 25:08 A RIDICULOUSLY AWESOME INTEGRAL int 0 to π2 xsin(x)cos(x)ln(sin(x))ln(cos(x) 13:15 Feynman's overpowered technique on iterated integrals【迭代积分的费曼超势技术】 14:38 A very interesting ...
equals(s1) 如果该字符串等于字符串s1,返回true equlsIgnoreCase(s1) 如果该字符串等于字符串s1,返回true;不区分大小写 compareTo(s1) 返回一个大于0、等于0、小于0的整数,表名一个字符串是否大于、等于或者小于s1 compareToIgnoreCase(s1) 不区分大小写的比较 startsWith(prefix) 如果字符串以特定的前缀开始,返...
What is the Value of Sin 30 Degrees in Terms of Cot 30°? We can represent the sine function in terms of the cotangent function usingtrig identities, sin 30° can be written as 1/√(1 + cot²(30°)). Here, the value of cot 30° is equal to 1.73205. ...
Prove. (1 - cos 2 theta) / (sin 2 theta) equals tan theta Prove the trigonometric identity: sin theta + sin theta cot^2 theta = csc theta Verify the identity. sec theta - cos theta = tan theta sin theta. Prove that csc^3 theta tan^2 theta cos^2 theta ...
If f (x) = sin^2 2x, then f' (x) = 2(sin 2x)(cos 2x). Is the following true or false? The third derivative of the quantity x times the sine of x equals the product of negative x and the cosine of x minus 3 times the sine of x. Tru...
sinx+cosx=0 Question: Solve the following: sinx+cosx=0 Solution of a Trigonometric Equation: A trigonometric equation has an infinite number of solutions, and we use an integer n to define its solution. We use the integer to define the solution because all trigonometric funct...
therefore, sin 90 degree equals to the fractional value of 1/ 1. sin 90° = 1 the most common trigonometric sine functions are sin 90 degree plus theta \(\begin{array}{l}\sin (90^{\circ}+\theta )=\cos \theta\end{array} \) sin 90 degree minus theta \(\begin{array}{l}\sin...
sin α = √(1 - cos^2 α) 其中,α表示任意角,sin α表示角α的sin值,cos α表示角α的cos值。 推导 该公式可以利用直角三角形的性质推导。如图所示,考虑一个直角三角形ABC,其中角C为直角,∠A = α,AB = c(斜边),AC = b(邻边),BC = a(对边)。 right triangle ABC with angle A equals alp...
Algebra Inputs Trigonometry Inputs Calculus Inputs Matrix Inputs sin(nπ) Differentiate w.r.t. n πcos(πn) Evaluate sin(πn)
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