Express 2Cos(a) - Sin(a) in the form RCos(a+b) Give the exact value of R and the value of b in degrees to 2 d.p.

R = 50.5

b = 26.57 degrees

Answered by William F. Maths tutor

4049 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

What is differentiation and how is it done?


Find the location of the turning point of the following curve, y = x^2 + 6x - 7


It is given f(x)=(19x-2)/((5-x)(1+6x)) can be expressed A/(5-x)+B/(1+6x) where A and B are integers. i) Find A and B ii) Show the integral of this from 0 to 4 = Kln5


A circle is given by the equation x^2+y^2-20x-24y+195=0. Draw this circle.


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