cotA=15/12 then sinA+cosA=17/13 prove it
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your answer bro
5
17
cotA=
5
12
=
P
B
B=12 and P=5
H
2
=B
2
+P
2
⇒H=
B
2
+p
2
⇒H=
12
2
+5
2
⇒H=
144+25
⇒H=
169
=13
Then sinA=
H
P
=
13
5
cosA=
H
B
=
13
12
cosecA=
P
H
=
5
13
∴(sinA+cosA)×cosecA=(
13
5
+
13
12
)×
5
13
17
×
5
13
=
5
17
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