Question

Using tables evallute the following :
4 cot 45° - sec² 60° + sin 30°​

Answer 1

4× cot 45° - sec² 60° + sin 30°

4× 1 - (1/2)² +1/2

4 - 1/4 + 1/2

4 - 1+4/4

4 - 5/4

16 - 5/4

11/4