Solve
the
following questions,
and le=o. If
Ac= 12cm
BE = 15cm Aca
р =
IN AABC, ZA = goo
find the value
of
cosa
Answers
Answered by
0
Answer:
1 3
6 0
cm Ans
Step by step explanation -
Given,
∠A=
90
∘
By Pythagoras theorem,
BC
2
=
AB
2
+
AC
2
BC
2
=
5 2
12
2
BC=
13
cm
Area of triangle =
2
1
×
base×
height
Thus,
2
1
AB×
AC=
2
1
AD×
BC
5× 12= 13× AD
AD=
1 3
6 0
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