Questions
If the angles of a triangle are 30° and 45° and the included side is ems, then the area of the triangle, is
detailed solution
Correct option is A
Using sine formula, we have3+1sin105∘=bsin30∘=csin45∘⇒ 22=2b=2c⇒b=2,c=2∴ Area of ΔABC=12bc sin A⇒ Area of △ABC=12×22sin105∘=3+12=13−1Talk to our academic expert!
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If , then the triangle is
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