70.4k views
2 votes
Please help!!

What is the measure of ∠C?

Round your final answer to the nearest tenth, if necessary.

a. 13.2°
b. 16.9°
c. 23°
d. 47°

Please help!! What is the measure of ∠C? Round your final answer to the nearest tenth-example-1
User Icex
by
6.0k points

2 Answers

3 votes
Your answer would be D. The angle C is 47 degrees.
User Yoeriboven
by
6.6k points
5 votes

From the given picture, we see that two sides and one angle is given

Using them we have to find the value of angle C

side AB=c=14 in

side BC=a=18 in

angle A= 110 degree

Now plug these values into sine formula


(a)/(\sin(A))=(b)/(\sin(B))=(c)/(\sin(C))

or
(18)/(\sin(110))=(b)/(\sin(B))=(14)/(\sin(C))

or
(18)/(\sin(110)) =(14)/(\sin(C))

or
(18)/(0.93969262) =(14)/(\sin(C))

or
19.1551999206=(14)/(\sin(C))

or
\sin(C)=(14)/(19.1551999206)

or
\sin(C)=0.730872037777

or
C=\sin^(-1) (0.730872037777}

C=46.959549954213535880191108778655

Which is approx 47 degree.

Hence final answer is C=47 degree.

User Moberemk
by
5.9k points