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ikadub [295]
2 years ago
7

Please help i am actually so confused on this one

Mathematics
2 answers:
Studentka2010 [4]2 years ago
7 0
The correct answer is C hope this help…….. lend
poizon [28]2 years ago
3 0

Answer:

C

Step-by-step explanation:

Using pythagoras theorem, you will find that AC= 12,

\sqrt{13^2-5^2}= 12

Sin A = Opposite / Hypotenuse, in this case the opposite of A is CB which is 5ft, and then Hypotenuse of the right angled triangle is AB. which is 13ft.

So, Sin A = 5/13

Tan A= Opposite/ Adjacent,

Opposite is CB, which is 5ft, adjacent is AC, which  is 12ft.

So, Tan A= 5/12

Cos A= Adjacent/Hypotenuse,

we know adjacent is 12ft and that hypotenuse is 13ft.

So Cos A= 12/13

However Sec A is the inverse of cos A.

So, Sec A= 13/12.

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