lolly1512 lolly1512

06-03-2022
Mathematics

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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 class=

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chibabykalu16 chibabykalu16

06-03-2022

Answer:

[tex]A= 93°[/tex]

Step-by-step 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

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