Question

If a = 30 then the value of 2 sin a
cos a ?

Answer 1

Answer:

2×sin30×cos30

2×1÷2×√3÷2

=√3/2

Answer 2

Answer:√3/2

Explanation:

Given: a=30

2sinacosa

2×sin30×cos30

2×½×√3/2 (sin30=½; cos=√3/2)

1×√3/2

√3/2