1.

12. In the given figure, find sec a.AB 4 cmCD 12 cmBC 3 cm

Answer» ONG>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


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