试题来源: 解析 2cos^2\theta -1 {cos^2\theta -sin^2\theta \over sin^2\theta +cos^2\theta }=cos^2\theta -sin^2\theta =cos^2\theta -(1-cos^2\theta )=2cos^2\theta -1综上所述,本题答案为2cos^2\theta -1.反馈 收藏
State the value of n and hence find the largest solution of this equation in the inter val0°≤θ≤360° . 相关知识点: 试题来源: 解析 (i)2(1-sin²\theta )=3sinθ(2sin(θ-1)(sin(θ+2)=0))θ=30°or150°(ii)n={{their30}\over{10}} =3(their3)θ=720+their1...
Answer to: Establish the identity. cos (pi over 2 + theta) = - sin theta By signing up, you'll get thousands of step-by-step solutions to your...
Find sin (2A), if sin (A) = - 11 over 61, and A is in quadrant 4. Find sin (x + y). Given: cos x = -1 / 2; sin y = 3 / 4; x and y are both in quadrant II. What is the value of \sin \dfrac{\theta}{2} if \cos \theta = \dfrac{\sqrt{7{4} and 270^\ci...
Answer to: Find sin(2 theta) if tan( theta) = 2/3 . By signing up, you'll get thousands of step-by-step solutions to your homework questions...
试题来源: 解析 2cos^2\theta -1 {cos^2\theta -sin^2\theta \over sin^2\theta +cos^2\theta }=cos^2\theta -sin^2\theta =cos^2\theta -(1-cos^2\theta )=2cos^2\theta -1 综上所述,本题答案为2cos^2\theta -1.反馈 收藏 ...
非零向量$\overrightarrow{a}=\left ( {sin\theta ,2} \right ),\overrightarrow{b}=\left ( {c
Measurement of sin^{2}θ_{eff}^{ℓ} and Z-light quark couplings using the forward-backward charge asymmetry in pp[over ¯]→Z/γ^{*}→e^{+}e^{-} ev... G. Degrassi, P. Gambino and A. Sirlin, Precise calculation of MW , sin2 ^W mZ and sin2 elefpft," Preprint NYU...
This takes the sin and cos algorithms from Optimized Routines under MIT license, and converts them to Numpy intrinsics. The routines are within the ULP boundaries of other vectorised math routines ...
Answer to: Establish the identity. csc theta + cot theta = sin theta over 1 - cos theta By signing up, you'll get thousands of step-by-step...