find the area of triangle ABC given that CA = 7cm angle ABC = angle BCA = 45 °
Answers
Answered by
7
Since the triangle is isosceles, we have BA = CA = 7 cm. Furthermore,
m∠BAC = 180° - m∠ABC - m∠CBA = (180-45-45)° = 90°,
so BA and CA are perpendicular. Therefore the area of the triangle is
(1/2) BA * CA = 24.5 cm^2.
m∠BAC = 180° - m∠ABC - m∠CBA = (180-45-45)° = 90°,
so BA and CA are perpendicular. Therefore the area of the triangle is
(1/2) BA * CA = 24.5 cm^2.
Similar questions