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Work out the size of angle A. А 11 cm 9 cm 38° B С​

Work out the size of angle A. А 11 cm 9 cm 38° B С​-example-1
User Vinit
by
6.5k points

1 Answer

8 votes

Answer:


A= 93°

Explanation:

analysis:

according ABC is a triangle

AB-11cm AC-9cm ABC=38

sin 38° =0.62

AB:sinC-AC:sin 38

sinC-AB x sin 38°+AC=11 x 0.62 +9 -0.76

so 2C-49°

then angle A=180-38-49-93

User Stefan Blamberg
by
6.9k points
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