Assume a triangle ABC has standard labeling. Determine whether SAA, ASA, SSA, SAS, or SSS is given. Then decide whether the law of sines or the law of cosines should be used to begin solving the triangle.b, c, and C
A. SAS; law of sines
B. SSA; law of sines
C. SAS; law of cosines
D. SSA; law of cosines
Answer: B
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Solve the problem. Round results to an appropriate number of significant digits.From a balloon 1185 ft high, the angle of depression to the ranger headquarters is 51°38'. How far is the headquarters from a point on the ground directly below the balloon (to the nearest foot)?
A. 943 ft B. 938 ft C. 933 ft D. 928 ft
Solve the problem.The intensity of a radio signal from the radio station varies inversely as the square of the distance from the station. Suppose the the intensity is 8000 units at a distance of 2 miles. What will the intensity be at a distance of 3 miles? Round your answer to the nearest unit.
A. 3520 units B. 3539 units C. 3556 units D. 3582 units
Evaluate the determinant.
?
?
A. 
B. 
C. 
D. 
E. 
Write the expression in standard form.
A. - 
+ 
i
B. 
+ 
i
C. 
- 
i
D. - 
- 
i