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0 votes
Trigonometric area formula: Area = What is the area of triangle PQR? Round to the nearest tenth of a square unit. 70.5 square units 111.3 square units 185.4 square units 222.5 square units

asked
User Bolster
by
7.9k points

2 Answers

1 vote

Answer:

111.3 square units

Explanation:

answered
User Kunchok
by
7.4k points
3 votes
the complete question in the attached figure

we know that
When we know two sides and the included angle the formula for calculate the area is
Area=(1/2)*a*b*sin C
in this problem
let
a=20
b=12
C=68°
Area=(1/2)*20*12*sin 68°------> Area=111.26 units²-----> Area=111.3 units²

the answer is
111.3 units²
Trigonometric area formula: Area = What is the area of triangle PQR? Round to the-example-1
answered
User Shirik
by
8.8k points
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