Answers>Maths>A Level>Article

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 = 5^0.5

b = 26.57 degrees

Answered by William F. • Maths tutor

3763 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

y = x(x-2)^-1/2. Prove dy\dx = (x-4)/2(x-2)^3/2

Given that y =2x^3 + 3/(x^2), find a) dy/dx and b) the integral of y

Work out the equation of the tangent at x = 3, knowing that f(x) =x^2

The quadratic equation 2x^2 + 8x + 1 = 0 has roots a and b. Write down the value of a + b, a*b and a^2 + b^2.

We're here to help

Message us on Whatsapp

+44 (0) 203 773 6020

Company Information

Popular Requests

Maths tutor Chemistry tutor Physics tutor Biology tutor English tutor GCSE tutors A level tutors IB tutors Physics & Maths tutors Chemistry & Maths tutors GCSE Maths tutors

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy|

CLICK CEOP

Internet Safety

Payment Security

Cyber

Essentials