tan(x)(cot(x)+tan(x))=1−cos2(x) Trigonometric Identities: We have to prove the trigonometric identity that contains a tangent, a cotangent, and a square of a cosine term. We will use the following trigonometric identities: tanx...
We have the following trigonometric identity: $$\begin{align} \dfrac{1 + \cos (2x)}{2\cos x} = \cos x \end{align} $$ To prove the identity, we...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our exper...
上述定义中,第(3)条中的元素 e 称为单位元(identity),第(4)条中的 b 称为a 的逆元(inverse),通常也记作 a−1 。成立(1)的集合 G 称为原群(magma);成立(1)(2)的集合 G 称为半群(semigroup);成立(1)(2)(3)的集合 G 称为幺半群(monoid)。例如,在 R3 上的向量积由于不满足结合律,无法...
If cosθ=61 and theta is acute, how do you find cot(2π−θ) ? https://socratic.org/questions/if-cos-theta-1-6-and-theta-is-acute-how-do-you-find-cot-pi-2-theta cot(2π−θ)=35 Please see the explanation for the process. Explanation: Start with the identity for the cosine...
1+2+3+\cdots=-\frac{1}{12}\\ 在这里的运算中,发散级数被视作收敛级数,这是不严谨的。特别地,我们用到了 4c=0+4+0+8+\cdots ,此步骤不能以加法单位元(additive identity)作为依据。为了修正这一问题,我们可以使 1+2+3+\cdots 依附于某函数。比如,将此级数中的各项从数字 n 改为函数 n^{-...
(sin θ cos (φ ))^2+(sin θ sin (φ ))^2+(cos )^2θ =1 相关知识点: 试题来源: 解析 (sin θ cos φ)^2+(sin θ sin (φ ))^2+(cos )^2θ =(sin )^2θ (cos )^2φ+(sin )^2θ (sin )^2(φ )+(cos )^2θ =(sin )^2θ . ((cos )^2(φ )+(sin )^2(...
试题来源: 解析 (cos^2θ)/(1-sinθ)=1+sinθ (1-sin^2θ)/(1-sinθ)=1+sinθ ((1-sinθ)(1+sinθ))/(1-sinθ)=1+sinθ 1 - sin 0 1+sinθ=1+sinθ(/ Recall1 that, so sin^2θ+cosθ=1 cos^2θ=1-sin^2θ 反馈 收藏 ...
2−1cos2(x)2-1cos2(x) Rewrite2−1cos2(x)2-1cos2(x)as2−sec2(x)2-sec2(x). 2−sec2(x)2-sec2(x) Because the two sides have been shown to beequivalent, theequationis anidentity. 2−sec2(x)=1−tan2(x)2-sec2(x)=1-tan2(x)is anidentity ...
解x 圖表 測驗 Trigonometry 5類似於: 來自Web 搜索的類似問題 https://socratic.org/questions/how-do-you-solve-sinx-sqrt2-2 https://socratic.org/questions/use-the-double-angle-identity-to-find-the-exact-value-for-cos-2x-given-sin-x-sqr https://socratic.org/questions/how-do-you-use-the-do...
Human hRack1 protein share 75.8% amino acid sequence identity with Drosophila Rack1, indicating there are evolutionarily conserved. Co-IP results showed that hRack1 could bind Ci and Cos2 in S2 cells (Fig. 7a, b). The increase of Ci protein induced by rack1 RNAi could be restored by ...