Solve the equation 2(cos x)^ 2=2-sin x for 0 <=x<=180

Recall the identity ((cos x)^2+(sin x)^ 2=1). Rearrange the identity to give cos x in terms of sin x. Substitute this into the equation. Rearrange so all terms are on one side of the equation and factories the highest common factor. Solve the factorized equation and check the results lie within the range.

Answered by Pablo G. Maths tutor

3483 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

What is a radian?


Differentiate the function X^4 - (20/3)X^3 + 2X^2 + 7. Find the stationary points and classify.


Find the stationary points of the curve f(x) =x^3 - 6x^2 + 9x + 1


Use calculus to find the set of values of x for which f(x) = x^3 - 9x is an increasing function.


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 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences