This preview shows page 1. Sign up to view the full content.
Unformatted text preview: clockwise angle from the true North), the
h sin (α − β )
angle of elevation of the aeroplane measured from A is tan−1
d cos β
22. If 8 cos x − 15 sin x = r cos(x + α), ﬁnd the values of r and α, r being a positive number and
α an angle between 0◦ and 360◦ .
23. If tan θ = k tan(α − θ), prove that k−1
sin(2θ − α)
sin α Find all the angles between 0◦ and 360◦ , which satisfy the equation tan θ = 3 tan(150◦ − θ).
24. If tan α = −2, where 0 < α < π , and tan β = , where π < β < 2π , ﬁnd α + β without using
tables or a calculator.
View Full Document
This note was uploaded on 03/26/2013 for the course SENG 1 taught by Professor Mf during the Spring '13 term at UCL.
- Spring '13