CE 221
Homework 1
Due Wednesday September 3, 2014
1. Proof the following trigonometric identity:
Tan (2a )
2 tan a
1 tan 2 a
2. Proof that sin(a+b) = [sin(a)][cos(b)] + [cos(a)][sin(b)]
3.
Proof that sin2a + cos2a = 1.0
4.
Proofs that for any triangle, t
CE 221
Summer 2014
HW F Due Wednesday September 24
On the course web page, access practice problems answers
only. Solve the five problems in practice F.
For each problem, please include the problem text and step by
step solution and submit the HW on engin
CE 221
Summer 2014
HW CDE Due Wednesday September 17
On the course web page, access practice problems answers
only. Solve all 5 problems in practice CDE.
For each problem, please include the problem text and step by
step solution and submit the HW on engi
CE 221
Summer 2014
HW G Due Wednesday October 1
On the course web page, access practice problems answers
only. Solve the five problems in practice G.
For each problem, please include the problem text and step by
step solution and submit the HW on engineer
CE 221
Fall 2014
HW AB Due Wednesday September 10
On the course web page, access practice problems answers
only. Solve all 5 problems in practice AB.
For each problem, please include the problem text and step by
step solution and submit the HW on engineer