(Q16)Evaluate the following 2 tan
2
45° + cos
2
30° - sin
2
60°
2 tan
2
45° + cos
2
30° - sin
2
60°
= 2(
)
2
+ (
√
2
)
2
- (
√
2
)
2
=
1
+
4
-
4
=
+ 3 - 3
4
=
4
=
Clear