i) Show that the equation 2 sin x cos x = 1 can be written as
Question:
i) Show that the equation 2 sin² x − cos x = 1 can be written as a quadratic equation in cos x.
ii) Solve the equation 2 sin² x − cos x = 1 for 0° ≤ x ≤ 180°.
iii) Hence solve the equation
for 0° ≤ x ≤ 180°.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Related Book For
Complete Pure Mathematics 1 For Cambridge International AS & A Level
ISBN: 9780198427438
2nd Edition
Authors: Jean Linsky, Brian Western, James Nicholson
Question Posted: