(Q15)Evaluate the following
sin 30° + tan 45° - cosec 60°
cot 45° + cos 60° - sec 30°
 .

sin 30° + tan 45° - cosec 60°
cot 45° + cos 60° - sec 30°
=
1
 + -
2
√
+
1
 -
2
√
=
1 +
2
 -
2
√
+ 1
2
 -
2
√
=
2
 -
2
√
2
 -
2
√
=
3√3 -
√3
3√3 -
√3
 =
3√3 -
√3
 ×
√3
3√3 -
=