θ के लिये हल कीजिये 2cos(theta)*sin(theta)=-sin(theta)解题步骤 1 在等式两边都加上 。解题步骤 2 从 中分解出因数 。 点击获取更多步骤... 解题步骤 2.1 从 中分解出因数 。 解题步骤 2.2 对 进行 次方运算。 解题步骤 2.3 从 中分解出因数 。 解题步骤...
C2:rho=sintheta Rightarrowrho2=rhosintheta Rightarrowx2+y2=y Rightarrowx2+(y−12)2=(12)2 然后就可解得两个圆的圆心距为:d=√52 答案√52 先将原极坐标方程两边同乘以后,化成直角坐标方程,再利用直角坐标方程求出圆心距即可. 结果一 题目 极坐标方程分别为和的两个圆的圆心距为___....
Prove the identity: \cos(\sin^{-1} ) x = \sqrt{1 - x^2} Prove the identity: (sec x / tan x) + tan (-x) / sec (-x) = cos^2 x/ sin x Prove the identity: sin^{2} \theta + cos^{2} \theta =1 Prove the identity. (1 - cos^2 x) sec x = sin x tan x...
sin ( + /4) = 2/2 (sin + cos ) Verify the identity: sqrt{(1 - cos x)/(1 + cos x)} = (1 + sin x)/sin x Verify the identity. cos x = sin x sin 2x + cos x cos 2x Verify the identity. sin 2 x - tan x = tan x cos 2 x Verify the identity. sin alpha/3 cos...
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Answer to: Find the exact value of sin theta and tan theta when cos theta has the indicated value. cos theta = 1 / 2 By signing up, you'll get...
来去强来去强来去强来去强来去强已知\tan a=2,则\dfrac{{{\sin }^{2}}\theta 2\sin \theta \cos \theta }{2{{
Use the given information to find the exact value of the expression {eq}\sin 2 \theta {/eq}. {eq}\cos \theta = \dfrac {21} {29},\ \theta {/eq} lies in quadrant IV Double Angle Identity of a Sine Function: The double angl...
解题步骤 2 将sin(2θ)cos(2θ)sin(2θ)cos(2θ) 转换成 tan(2θ)tan(2θ)。 tan(2θ)=cos(2θ)cos(2θ)tan(2θ)=cos(2θ)cos(2θ)解题步骤 3 约去cos(2θ)cos(2θ) 的公因数。 点击获取更多步骤... 解题步骤 3.1 约去公因数。 tan(2θ)=cos(2θ)cos(2θ)tan(2θ)=cos(2θ...
Evaluate ∫cos2θln(cosθ+sinθcosθ−sinθ)dθ∫cos2θln(cosθ+sinθcosθ−sinθ)dθ. My attempt: I converted the part inside ln()ln() to ln(1+sin2θcos2θ)ln(1+sin2θcos2θ) then put it as t but I can't pro...