The tangent ratio of a triangle relates the two sides of the triangle that are not the hypotenuse. The ratio requires a simple calculation. Examples are included. Related to this Question Explore our homework questions and answers library Search Browse Browse by subject
The sine of an angle, α, defined with reference to a right triangle is sin(α)=opposite sidehypotenuse=ah . The sine of a complex argument, α, is sin(α)=eiα−e−iα2i . Tips To computesin(X*pi)accurately, without usingpias a floating-point approximation of π, you can...
【题目】在$$ \triangle A B C $$C中,内角A,B,C的对边分别是a,b,c,已知$$ a = 2 , \sin B - \sin C = \sin ( 2 A + C ) = \frac { \sqrt { 3 } } { 3 } $$,则△ABC的面积为___. 相关知识点: 试题来源: 解析 【解析】 $$ \frac { 5 \sqrt { 3 } } { ...
在\triangle ABC中,角A、B、C所对的边分别为a、b、c,若a=6,c=4,\sin \dfrac {B}{2}= \dfrac { \sqrt {3}}{3
Sine, cosine and tangent, often shortened to sin, cos, and tan in mathematical operations and on calculator keys, are the most basic trigonometric functions. All three are based on the properties of a triangle with a 90-degree angle, also known as a right triangle. By knowing the sides of...
s archetypal theories into the interpretation of films.The film Triangle(2007) is a fascinating and successfulthriller characterized by its legion psychological puzzles and enigmatic plots.Through probing into this cliff-hanging film from theperspective of archetypal criticism,focusing on its displaced ...
Ask a question Search AnswersLearn more about this topic: Interior & Exterior Angles of a Triangle | Overview & Examples from Chapter 4 / Lesson 7 147K Understand the concept of interior angles and exterior angles. Learn how to measure the interior and exterior ang...
解:在\triangle ABC中由正弦定理可知: \dfrac {a}{\sin A}= \dfrac {b}{\sin B}= \dfrac {c}{\sin C}=2R, 由\sin C=2\sin A,则c=2a, \cos B= \dfrac {1}{4},\sin B= \sqrt {1-\cos ^{2}B}= \dfrac { \sqrt {15}}{4}, 由余弦定理可知:b^{2}=a^{2}+c^{2}...
(9分)当且仅当$$ b = c = 1 $$时,等号 成立...(10分) 则$$ S _ { \triangle A B C } = \frac { 1 } { 2 } b c \sin A = \frac { \sqrt { 3 } } { 4 } b c \leq \frac { \sqrt { 3 } } { 4 } $$,...(11分 ) 所以△ABC面积S的最大值为 $$ \frac {...
3. ratio of the opposite side to the hypotenuse of a right-angled triangle 4. the 21st letter of the Hebrew alphabet 5. violent and excited activity; "they began to fight likesin" Verb 1. commit a sin; violate a law of God or a moral law ...