8.What is the value of tan^2 30° + 2 cot^2 60°
Answers
Answered by
0
Answer:
Step-by-step explanation:
Explanation:
cos
60
∘
=
sin
30
∘
=
1
2
and
tan
30
∘
=
cot
60
∘
=
1
√
3
Hence
cos
2
60
∘
sin
2
30
∘
+
tan
2
30
∘
cot
2
60
∘
=
(
1
2
)
2
×
(
1
2
)
2
+
(
1
√
3
)
2
×
(
1
√
3
)
2
=
1
4
×
1
4
+
1
3
×
1
3
=
1
16
+
1
9
.
=
9
+
16
144
=
25
144
Similar questions