Register to reply

Solve the trig

by hayowazzup
Tags: solve, trig
Share this thread:
Jun6-08, 03:20 AM
P: 64
1. The problem statement, all variables and given/known data
1 = 121 sinθ *cosθ + 592.9 (cosēθ)

2. Relevant equations

3. The attempt at a solution

1= 60.5 * 2 *sin θ *cosθ + 592.9 (cosēθ)
1= 60.5 sin 2θ + 592.9 (cosēθ)
1-60.5 sin 2θ / cos θ cos θ= 592.9

am i doing it rite? i don't know what to do
Phys.Org News Partner Science news on
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100
Jun6-08, 03:22 AM
P: 683
Use [tex] sin^2 + cos^2 =1 [/tex]
Jun6-08, 04:01 AM
P: 64
but i don't know how to get rid of sin θ *cosθ

Jun6-08, 08:20 AM
Sci Advisor
HW Helper
P: 25,228
Solve the trig

You wrote sin(theta)*cos(theta) in terms of sin(2*theta). Write cos(theta)^2 in terms of cos(2*theta).

Register to reply

Related Discussions
Integration - Trig Substitutions (solve for Y) Calculus & Beyond Homework 5
Simplify and Solve Trig Equation Precalculus Mathematics Homework 8
Trig Solve for Solution Within Interval Precalculus Mathematics Homework 6
Plz help a little tricky TRIG eqn or SOlve not sure Introductory Physics Homework 18
Trig solve quadratic equation Introductory Physics Homework 9