Question

If x = 15°, evaluate :
4 cos 2x.sin 4x.tan 3x - 1.​

Answer 1

Answer:

ANSWER

Given, x=15

∘

Now,

4cos2xsin4xtan3x−1

=4(cos30)(sin60)(tan45)−1

=4⋅

2

3

⋅

2

3

⋅1−1

=3−1 =2