Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 6 - No. 34)

If you know two sides and the angle *between* those sides in a triangle, which formula for area is appropriate?

Area = 1/2 * base * height

Area = 1/2 * a * b * sin C

Area = √(s(s-a)(s-b)(s-c))

Area = (a + b + c)/2

1/2 * a * b * sin C is the formula