If a triangle has sides 5, 12 and 13 uni...

If a triangle has sides 5, 12 and 13 units and `theta` is the acute angle of the triangle, then what is the value of `(sin theta + cos theta)` ?

A

`(5)/(13)`

B

`(7)/(13)`

C

`(12)/(13)`

D

`(17)/(13)`

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