Question

12. In the given figure, find sec a.
AB 4 cm
CD 12 cm
BC
3 cm

Answer 1

Answer:

13/12

Step-by-step explanation:

In ABC

AB*2+BC*2=AC*2(Pythagoras theorem)

so AC=√16+9=√25=5

now In ACD

AD*2=12*12+5*5=169

AD=13

now sec A=Hypotenuse/base

so secA=13/12