Question

tan3x=sin45×cos45+sin30​

Answer 1

Answer:

Step-by-step explanation:

tan 3x = sin 45.cos 45 + sin 30 .

Answer 2

Answer:

15

Step-by-step explanation:

R.H.S

sin45⋅cos45

o

+sin30

=

2

1

.

2

1

+

2

1

=

2

1

+

2

1

=

2

2

=1

Now,

L.H.S

tan3x=1

But tan45

o

=1

∴tan3x=tan45

⇒3x=45

⇒x=

3

45

∴x=15.