Solving trigonometric equations using compound angle formula
Jun 15, 2015 · The discussion revolves around solving the trigonometric equation 2sin (x) = 3cos (x-60) using the compound angle formula. Participants express confusion regarding the application of the …
Compound Angle Formula: Solving Double Angle Equations - Physics …
May 7, 2022 · Hi, I am confused about how to handle the double angle formula. For example, sin (19pi/12)= sin (9pi/12+10pi/12) but there can be many other options too. like...
Compound Angle Formula for Trig Functions • Physics Forums
Mar 11, 2024 · The discussion focuses on using the compound angle formula for trigonometric functions, specifically the formula sin (A + B) = sinA cosB + cosA sinB. The problem presented involves …
Can You Solve This Compound Angle Formula Question?
Apr 24, 2007 · It's a previous exam question using compound angle forumlas. I've tried everything to try and get the answer involving rearrangments! I know the forumlas i just can't get them to work to …
How Can I Understand and Use Double-Angle Formulas in Trigonometry?
Jul 7, 2003 · The discussion revolves around understanding and applying double-angle formulas in trigonometry, particularly in the context of solving problems involving trigonometric functions.
How Do You Solve for Sin (theta/2) Using the Half Angle Formula?
Apr 22, 2009 · The discussion focuses on solving for sin (theta/2) using the Half Angle Formula, given that sin (theta) = 3/5 and 0 < theta < π/2. The user initially derived the expression as the square root …
Solving for Sin (π/12): How Do I Get (π/3-π/4)? - Physics Forums
Nov 19, 2014 · In then math course I am taking it is giving the example of using compound angle formulas to solve sin(pi/12). The solution in the formula says that it is (pi/3-pi/4). I don't understand …
Help with compound angle formulae (exact value) for angles over 120 ...
Apr 22, 2010 · This discussion focuses on solving compound angle formulae, specifically for angles greater than 120 degrees, using exact values. The key equations referenced include the tangent sum …
Trigonometry (Double angle formula) - Physics Forums
Apr 11, 2013 · Homework Statement Calculate the value of \\tan(\\frac{\\pi}{12}) without the use of a calculator and showing all steps. Homework Equations Compound angle formula / Double angle …
How Do You Derive the Formula for sin (x-y)? - Physics Forums
Feb 5, 2024 · TL;DR In trying to derive the compound angle formula for sin (x-y), I ended up with two possible solutions from the quadratic. How do I know which solution to take?