Step 8: Expressb−c From the Sine Rule, we can expressbandcin terms ofK: b=KsinB,c=KsinC Thus, b−c=K(sinB−sinC) Step 9: Substituteb−cinto the right-hand side The right-hand side is: RHS=2(b−c)cos2(A2)=2K(sinB−sinC)cos2(A2) ...
Using the definition of tangent in a triangle, we know:tanB=ahwhere h is the height from vertex A to side BC. We can also express tanB in terms of sides a,b,c using the sine rule:tanB=bsinAcsinC Step 3: Substitute tanB into the equationNow, substituting tanB into the tangent ...
What is the sine rule? How do you to convert polar to rectangular coordinates? What are some tips to solve pythagorean theorem word problems? How do you find the equation for the line of the best fit of the scatter diagram? 1. When calculating the area of a circle,...
V.根据汉语意思完成句子(10分)46.国王要他证明他的皇冠是金子做的。The king asked him to prove that his crowngold.47
Prove the following identity: sinh2x=2sinhxcoshx Double Angle Sine Hyperbolic Function: To simplify the multiplication of hyperbolic functions using their exponential expressions given below, use the general algebraic formula and exponent rule of exponentials. ...
3) AAA(Angle-Angle-Angle): if all the interior angles are congruent then triangles are also congruent. The sine of congruence is ≅ Answer and Explanation: Given: AB=CE, BC=ED, AC=CD Considering the △ABC and △CDE:- {eq}...
NCERT solutions for CBSE and other state boards is a key requirement for students. Doubtnut helps with homework, doubts and solutions to all the questions. It has helped students get under AIR 100 in NEET & IIT JEE. Get PDF and video solutions of IIT-JEE Mains & Advanced previous year pap...
Step 1: Start with the Left-Hand Side (LHS)We begin with the left-hand side of the equation:LHS=(b+c)cos(B+C2) Step 2: Use the Sine RuleAccording to the sine rule, we have:asinA=bsinB=csinC=kFrom this, we can express a, b, and c in terms of k:a=ksinA,b=ksinB,c=ksi...
NCERT solutions for CBSE and other state boards is a key requirement for students. Doubtnut helps with homework, doubts and solutions to all the questions. It has helped students get under AIR 100 in NEET & IIT JEE. Get PDF and video solutions of IIT-JEE Mains & Advanced previous year pap...
frac{sin(B-C)}{sin(B+C)}=frac{sinB.cosC-cosB.sinC}{sinB.cosC+cosB.sinC} By sine rule, frac{a}{sin A}=frac{b}{sin B}=frac{c}{sin C}=k---(1) By cosine rule, cos A=frac{b^2+c^2-a^2}{2bc}---(2) cos B=frac{c^2+a^2-b^2}{2ca}---(3) cos C=frac{...