If A=30', verify that tan²A + Cot+A+2= Sec²A Cosec²A.
Answers
Answered by
0
Answer:
If A=30
0
,
To prove,
cos2A=
1+tan
2
A
1−tan
2
A
Put A=30
o
in L.H.S, we get
cos2A=cos2(30
o
)=cos60
0
=
2
1
Also, put A=30
o
in R.H.S,
1+tan
2
A
1−tan
2
A
=
1+tan
2
30
o
1−tan
2
30
o
=
1+(
3
1
)
2
1−(
3
1
)
2
⇒
1+
3
1
1−
3
1
→
3+1
3−1
=
4
2
=
2
1
L.H.S=R.H.S=
2
1
Hence proved.
Answered by
0
LHS=RHS
Hencr, verified
Attachments:
Similar questions