Solve: 2 sin(2x) = (1-sin(x))cos(x) for 0<x<2*Pi and give any values of x, if any, where the equation is not valid

Double angle formula:Sin(2x) = 2sin(x)*cos(x)==> 2sin(x)*cos(x) = (1-sin(x))*cos(x)       (2sin(x)-1+sin(x))*cos(x) = 0(3sin(x) - 1)*cos(x) = 0     i) cos(x) = 0,  ii) 3sin(x) = 1 ==> sin(x) = 1/3         i) x = Pi/2, 3Pi/2    ii) x = 0.3398 Rad,  2.8018 Rad

Answered by Henry F. Maths tutor

4183 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Integrate y with respect to x, where y = cos(x)/[1+tan^2(x)]


Differentiate y=(x-1)^4 with respect to x.


How do I differentiate a quadratic to the power n?


Integrate sin7xcos3x


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences