Unit Test #44

Select your answers to the following 10 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

 

Given three sides of a non-right-angled triangle, which of the following would you use to find one of the angles? A. Sine Rule
B. Cosine Rule
C. Area Formula
D. Laws of Indices

Answer 1:

 

 

Q2:

 

Fred is using the cosine rule to find an angle P. 
He writes 36 = 296 - 280cosP
A correct statement that follows this is:
A. 332 = 280cosP
B. 260 = -280cosP
C. 36 = 16cosP
D. -260 = -280cosP

Answer 2:

 

 

Q3:

 

The value of sin C is:

A 56 sin 20°
B. 
C. 
D. 

Answer 3:

 

 

Q4:

 



The best expression to use to find the length of side BC is
A.  
B. 
C.
D. 

Answer 4:

 

 

Q5:

 

In using the Cosine Rule, a student wrote x2= 36 + 49 - 84cos 40°

The statement that follows from this is:

A. x= 36 - 35cos40°
B. x= 85 - 84cos40°
C. x= 1cos40°
D. x= 6+7 - 9.2cos40°

Answer 5:

 

 

Q6:

 

If x =  
find x (to 2 s.f.)
A. 1.8
B. 1.83
C. 1.4
D. 3.3

Answer 6:

 

 

Q7:

 

A line in a calculation using the Cosine Rule is cosA =
What is the size of angle A (to 1 d.p.)?
A. 64.3°
B. 28.8°
C. 25.7°
D. 61.2°

Answer 7:

 

 

Q8:

 

If x2 = 36 - 35cos 35°, what is x? (to 2 sig.fig.) A. 2.7
B. 0.82
C. 7.3
D. 54

Answer 8:

 

 

Q9:

 

Find the square root of 105 to 3 significant figures. A. 10.2 
B. 10.25 
C. 10
D. 11025

Answer 9:

 

 

Q10:

 

Which of the following would you use to find the length of DG?

A.Sine Rule
B.Cosine Rule
C.Pythagoras' Theorem
D.Area Formula

Answer 10: