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Given a triangle ABC whose angles B and C are 55° and 60° and the line AC is 15 units. Find the length of line AB

O 14.54 units
O 15.86 units
• 14.19 units
• 11.32 units

1 Answer

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Answer:

sin rule=b/sin B=c/sin C

180°-55°-60°=65°

15/sin 55°=C/sin 60°

15 sin 60°=C sin 55°

15 sin 60°/sin 55°= 15.858

= 15.86.

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