Answer:
11.25pi units² or 35.3 units² (3 sf)
Step-by-step explanation:
½×r²×theta
½ × 5² × 0.9pi
11.25pi units²
Or, 35.3 units² (3 sf)
Answer:
36
Step-by-step explanation:
i multpliy 9x4=36
Answer:
62652
Step-by-step explanation:
15553
Answer
Sksjkskskalalaalalskkskdkskskskskksksksksk
Explanation:
Hope that helps
Answer:
D
Step-by-step explanation:
Using the Cosine rule to find AC
AC² = BC² + AB² - (2 × BC × AB × cosB )
= 18² + 12² - ( 2 × 18 × 12 × cos75° )
= 324 + 144 - 432cos75°
= 468 - 111.8
= 356.2 ( take the square root of both sides )
AC = ≈ 18.9
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Using the Sine rule to find ∠ A
= ( cross- multiply )
18.9 sinA = 18 sin75° ( divide both sides by 18.9 )
sinA = , then
∠ A = ( ) ≈ 66.9°