In triangle ABC, AB=c, BC=a, CA=b
1 answer:
Answer:
Step-by-step explanation:
Correct option is
B
AE
2
=
9
73
C
tanθ=
8
3
Hence
BD=DE=EC=
3
5
and △ABC is a right angled triangle.
Now
cosC=
2.AC.EC
AC
2
+EC
2
−AE
2
Or
AE
2
=AC
2
+EC
2
−2.AC.EC.cosC
Or
=4
2
+(
3
5
)
2
−2.8.
3
5
.cosC
=16+
9
25
−
3
2×4×5
.
5
4
Or
=
9
169
−
3
32
=
9
169−96
=
9
73
.
Hence
AE
2
=
9
73
.
cosθ=
2.AE.4
AE
2
+4
2
−
3
5
2
=
73
8
.
Hence
secθ=
8
73
Now
tanθ=
sec
2
θ−1
=
64
73
−1
=
8
3
.
solution
Expand-image
Correct option is
B
AE
2
=
9
73
C
tanθ=
8
3
Hence
BD=DE=EC=
3
5
and △ABC is a right angled triangle.
Now
cosC=
2.AC.EC
AC
2
+EC
2
−AE
2
Or
AE
2
=AC
2
+EC
2
−2.AC.EC.cosC
Or
=4
2
+(
3
5
)
2
−2.8.
3
5
.cosC
=16+
9
25
−
3
2×4×5
.
5
4
Or
=
9
169
−
3
32
=
9
169−96
=
9
73
.
Hence
AE
2
=
9
73
.
cosθ=
2.AE.4
AE
2
+4
2
−
3
5
2
=
73
8
.
Hence
secθ=
8
73
Now
tanθ=
sec
2
θ−1
=
64
73
−1
=
8
3
solution
Expand-image
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hello,
the first term is 250 so this is the initial invested amount
is to compute 8% annual interest compounded monthly (there are 12 months in a year)
and then multiply by 4 means that it is computed for 4 years so
finally the answer is
$250 is invested at 8% annual interest compounded monthly for 4 years
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Answer:
x = -b +or- the square root of (b^2-4ac) ALL / 2a
sing to "pop goes the weasel" lol
Answer:
12
Step-by-step explanation:
just find the HCF, which will be
2² × 3 = 12
(8x2.3)= (18.4)
(2.1x4)= (8.4)
Now you should have:
41-9+18.4-15+8.4
9+18= 27
15+8.4= 23.4
Should have:
41-27-23.4= -9.4
