यदिsecθ(cosθ+sinθ)=√2है,तो(2sinθ)/(cosθ−sinθ)का मान क्या है? If sec theta + tan theta = m (>1) , then the value of sin theta is (0^@ यदि sec theta + tan theta = m (>1) हो, तो sin theta ...
若\cos \theta \lt 0,且\cos \theta -\sin \theta = \sqrt{1-\sin 2\theta },那么\theta 是( )A
【题目】证明恒等式:【题目】证明恒等式: \$\left( 1 - \sin ^ { 2 } \theta \right) \left( \se c ^ { 2 } \theta - 1 \right) = \sin ^ { 2 } \theta \left( c s c ^ { 2 } \theta - \cot ^ { 2 } \theta \right)\$ ...
If√3tanθ=3sinθ,prove that(sin2θ−cos2θ)=13. View Solution Prove that 1+cosθ−sin2θsinθ(1+cosθ)=cotθ View Solution Prove that :(1−cosθ)(1+cosθ)(1+cot2θ)=1 View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class...
Answer to: Verify the following identity: (cos\theta - sin \theta)^2 = 1 - sin(2 \theta). By signing up, you'll get thousands of step-by-step...
Answer to: Verify the identity. sec^2 theta (1 - sin^2 theta) = 1 By signing up, you'll get thousands of step-by-step solutions to your homework...
已知sintheta;+sin2theta;=1,则cos2theta;+cos4theta;的值为( ) a.1 b. c. d.2 免费查看参考答案及解析 题目: 已知lgsintheta;=a,lgcostheta;=b,则sin2theta;=( ) a. b.2(a+6) c. d. 免费查看参考答案及解析 12345下一页共1000条数据 类目题库 ● 中西医结合助理医师 ● 土木...
化简(1-sin(theta)^2)*tan(theta)*sec(theta) (1−sin2(θ))⋅tan(θ)⋅sec(θ)(1-sin2(θ))⋅tan(θ)⋅sec(θ) 使用勾股恒等式。 cos2(θ)⋅tan(θ)⋅sec(θ)cos2(θ)⋅tan(θ)⋅sec(θ) 将tan(θ)tan(θ)重写为正弦和余弦形式。
水平方向： r=a(1-cosθ)或r=a(1 cosθ) (a>0) 或垂直方向： r=a(1-sinθ)或r=a(1 sinθ) (a>0) 平面直角坐标系表达式分别为x^2 y^2 a*x=a*sqrt(x^2 y^2)和x^2 y^2-a*x=a*sqrt(x^2 y^2）例如：当θ＝0°时，r＝a(1－0)＝a …… A点 当θ...
(20分)已知 \( \sin \theta = \frac{1}{2} \),求 \( \cos 2\theta \) 的值,并给出解题过程。相关知识点: 试题来源: 解析 \(\cos 2\theta = 1 - 2\sin^2 \theta = 1 - 2\left(\frac{1}{2}\right)^2 = \frac{3}{4}\) ...