{eq}\sin 2x(\tan x + \cot x) = 2 {/eq} Identities: In trigonometry, an equation consisting of any of the six trigonometric ratios (sine, cosine, tangent, secant, cosecant, and tangent) becomes an identity, when such equation holds true for any random value of the unknown. For...
Answer to: Verify the identity. sin (2x) = 2 tan x over 1 + tan^2x By signing up, you'll get thousands of step-by-step solutions to your homework...
sin42 x dx View Solution Evaluate∫sin3xdx View Solution Free Ncert Solutions English Medium NCERT Solutions NCERT Solutions for Class 12 English Medium NCERT Solutions for Class 11 English Medium NCERT Solutions for Class 10 English Medium
Let x=π2Left side: (split)sin 2x&=sin (2⋅ (π )2)\&=sin π \&=0(split)Right side: (split)2sin x&=2sin (π )2\&=2* 1\&=2(split)For x=π( 2), both sides of equation (1) are defined but are not equal. Therefore, the equation(1) is not an identity. No ...
prove the identity:2sin(45'-x)cos(45'-x)=cos2x 答案 2sin(45°-x)cos(45°-x)=sin(2*(45°-x))上式是因为倍角公式sin2x=2sinxcosx,将45°-x看成一个角.所以sin(2*(45°-x))=sin(90°-2x)=cos2x (由正弦与余弦的关系式可得)相关...
du/dx=−sin(x)du/dx=−sin(x) −du=sin(x)dx−du=sin(x)dx ∫sin3(x)cos2(x)dx=−∫(1−u2)u2du∫sin3(x)cos2(x)dx=−∫(1−u2)u2du ∫sin3(x)cos2(x)dx=∫(u4−u2)du∫sin3(x)cos2(x)dx=∫(u4−u2)du ...
Evaluate the integral∫sin2(x)dx∫sin2(x)dx Solution to Example 1: The main idea is to use the identitysin2(x)=12(1−cos(2x))sin2(x)=12(1−cos(2x))to reduce the power and hence make the integral easily evaluated as follows: ...
代数输入 三角输入 微积分输入 矩阵输入 sin(2π) =1 求值 1 因式分解 1
(split)(LHS)&= ((sin x+sin 5x)+(sin 2x+sin 4x)+sin 3x)((cos x+cos 5x)+(cos 2x+cos 4x)+cos 3x) &= (2sin 3xcos 2x+2sin 3xcos x+sin 3x)(2cos 3xcos 2x+2cos 3xcos x+cos 3x) &= (sin 3x(2cos 2x+2cos x+1))(cos 3x(2cos 2x+2cos x+1)) &=(RHS)(spli...
解析 The provided equation is an identity but there are no steps available.( (sin)(x-(π )/2)=-(cos)(x)) is an identity结果一 题目 Verify the Identity sin(x-pi/2)=-cos(x) 答案 The provided equation is an identity but there are no steps available. is an identity相关推荐 ...