Web某公司欲生产一款迎春工艺品回馈消费者,工艺品的平面设计如图所示,该工艺品由直角和以bc为直径的半圆拼接而成,点p为半圈上一点(异于b,c),点h在线段bc上,且满足ch⊥ab.已知,,设.(1)为了使工艺礼品达到最佳观赏效果,需满足,且达到最大.当为何值时,工艺礼品达到最佳观赏效果:(2)为了工艺礼品达到最佳 ... WebAnswer to Solved \[ r(\theta)=3(1+\cos (\theta)) \] \( r(\theta)=2

某公司欲生产一款迎春工艺品回馈消费者,工艺品的平面设计如图所 …

WebThe correct option is A. 2 cos θ. Step 1. Find the value of c o s θ + s i n θ: Given, cos θ - sin θ = 2 sin θ. square both sides, we get. cos 2 θ + sin 2 θ – 2 sin θ cos θ = 2 sin 2 θ. ⇒ … Webanswered 10 minutes ago by MonaliAgarwal (2.6k points) sin θ + cos θ = √2. Now square on both side. = ( sin θ + cos θ)2 = √22. = (sin2θ + cos2θ) + 2 sin θ cos θ = 2. = 1+ 2sin θ … night on earth horse

Let \( \mathrm{P}=\{\theta: \sin \theta-\cos \theta=\sqrt{2} \cos ...

WebApr 1, 2024 · #cos (2theta) / (cos theta - sin theta)# From the above table, #cos 2theta = cos^2 theta - sin^2 theta# #=> (cos^2 theta - sin^2 theta) / (cos theta - sin theta ... WebMay 20, 2015 · theta = -pi/2 + 2npi for all n in ZZ. To make sure that these are the only solutions: Starting with cos (theta)-sin (theta)=1, first add sin (theta) to both sides: cos (theta)=sin (theta)+1. Then square both sides: cos^2 (theta)=sin^2 (theta)+2sin (theta)+1. Then use cos^2 (theta)=1-sin^2 (theta) to get: 1-sin^2 (theta)=sin^2 (theta)+2sin ... WebFeb 20, 2024 · One of the identities for cos 2x is cos 2x = 1 - 2 sin 2 (x). This means an equivalent way of writing our problem is: 1 - 2sin 2 x = sin (x). 1 - 2y 2 = y , or more in a more familiar form, 1 - 2y 2 - y = 0 or -2y 2 - y + 1 = 0. sin (x) = 1/2 has two solutions on this interval, namely x = π/6 radians and x = 5π/6 radians or x = 30° and x ... nrs to indonesian rupiah