Question

in given figure A = 40 °, ABC = 95 °, BC = 50 cm. If BD perpendicular AC, Find CD.​

Answer 1

Answer:

50/√2

Step-by-step explanation:

Triangle BDC is a right angled triangle

By Angle Sum property in Triangle ABC Angle C=45°

by using complementary angle formulas

Cos C= Adjacent Side /Hypotenuse

Cos 45°=CD/BC

1/√2 = CD/50

50/√2 =CD

HENCE PROVED