By In a right angle triangle ABC with right
angle at B, in which a=24 units, b=25 units
and 2BAC = 0. Then, find coso and tan o
e
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answer: From the figure,
AC
2
=AB
2
+BC
2
AB
2
=25
2
−24
2
AB=
625−576
AB=
49
AB=7 cm
Now,
cosθ=
AC
AB
=
25
7
tanθ=
AB
BC
=
7
24
solution
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