【变式3-1】已知$$ \theta \in ( 0 , \pi ) , \sin \theta + \cos \theta = \frac { 7 } { 1 3 }
If 12 Sin theta=5 Cos theta , then Sin theta+Cos theta- Cot theta is equal to : यदि 12 Sin theta=5 Cos theta है, तो Sin theta+Cos theta- Cot theta का मान किसके बराबर होगा ? View Solution If 3 sin theta=2...
cossin相乘等于1/2sin2a。积化和差公式：sinα·cosβ=(1/2)[sin(α+β)+sin(α-β)]cosα·sinβ=(1/2)[sin(α+β)-sin(α-β)]cosα·cosβ=(1/2)[cos(α+β)+cos(α-β)]sinα·sinβ=-(1/2)[cos(α+β)-cos(α-β)]三角函数 是数学中属于初等函数中的超越函数的...
1- (sin ^ (2) theta) / (1 + cos theta) + (1 + cos theta) / (sin theta) - (sin theta) / (1-cos theta) - (1) / (sec theta) View Solution (cos^(2)theta(1-cos theta))/(sin^(2)theta(1-sin theta))=(1+sin theta)/(1+cos theta) View Solution Prove that (1)/(2...
将csc(θ)csc(θ) 重写为正弦和余弦形式。 cos(θ)1sin(θ)−sin(θ)cos(θ)1sin(θ)-sin(θ)将1sin(θ)1sin(θ) 转换成 csc(θ)csc(θ)。 cos(θ)csc(θ)−sin(θ)cos(θ)csc(θ)-sin(θ)Privacy Preference Center When you visit any website, it may store or retrieve information...
直角坐标系和柱坐标系之间的变换式为$$ x = r \cos \theta $$,$$ y = r \sin \theta $$,$$ X = Z $$。点M的直角
$$ \cos \theta - \sin \theta = $$( )$$ A . \sqrt { 2 } \cos ( \frac { \pi } { 4 } - \theta ) B . \sqrt { 2 } \cos ( \frac { \pi } { 4 } + \theta ) $$$ C . \sqrt { 2 } \cos ( \frac { \pi } { 3 } - \theta ) D . \cos ( \...
যদি sintheta – costheta = 0, (0^@ lt theta lt 90^@) এবং sectheta + cosectheta = x হয়, তাহলে x- এর মান –
(b)∣∣∣cosθ−sinθsinθcosθ∣∣∣=cosθ(cosθ)−sinθ(−sinθ)=cos2θ+sin2θ=1 View Solution Letθ=π5andA=[cosθsinθ−sinθcosθ]. If B = A+A4, then det (B). View Solution Iftanθ=1b,thenasinθ−bcosθasinθ+bcosθis ...
tan(θ)cos(θ)sin(θ)tan(θ)cos(θ)sin(θ) 将tan(θ)tan(θ)重写为正弦和余弦形式。 sin(θ)cos(θ)cos(θ)sin(θ)sin(θ)cos(θ)cos(θ)sin(θ) 组合sin(θ)cos(θ)sin(θ)cos(θ)和cos(θ)。 sin(θ)cos(θ)cos(θ)sin(θ)sin(θ)cos(θ)cos(θ)sin(θ) ...