Trigonometric Sum Identities — Cumulative exam

Question 1

Sandra graphed the system of equations that can be used to solve . What are the roots of the polynomial equation?

Revolt · Accepted Answer

–3, 4

Question 2

What is the solution of ?

Revolt · Accepted Answer

8

Question 3

By what approximate factor is the intensity of an earthquake with magnitude 5.4 greater than an earthquake with magnitude 5.3?M = the magnitude of an earthquakeI = the intensity of an earthquakeI0 = the smallest seismic activity that can be measured, which is 1

Revolt · Accepted Answer

1.26

Question 4

What is the exact value of cos(c + d), given for c in Quadrant II and for d in Quadrant III?

Revolt · Accepted Answer

StartFraction 21 + 24 StartRoot 7 EndRoot Over 100 EndFraction

Question 5

Which expression is equivalent to ?

Revolt · Accepted Answer

StartFraction negative 1 minus tangent (2 x) Over 1 + (negative 1) (tangent (2 x) ) EndFraction

Question 6

Which of the following describes the zeroes of the graph of f(x) = –x5 + 9x4 – 18x3?

Revolt · Accepted Answer

0 with multiplicity 3, 3 with multiplicity 1, and 6 with multiplicity 1

Question 7

The polynomial equation has complex roots . What is the other root? Use a graphing calculator and a system of equations.

Revolt · Accepted Answer

–1

Question 8

Suppose and sin(x) > 0. What is the value of tan(2x)?

Revolt · Accepted Answer

Negative four-thirds

Question 9

What is the value of ?

Revolt · Accepted Answer

3

Trigonometric Sum Identities — Cumulative exam Answers

More from this Course

TRY EDGENUITY HACKS