Question

5) Evaluate tan245 cos 30-sin 60​

Answer 1

Answer:

answer

Step-by-step explanation:

We know that,

cos60

∘

=1/2=sin30

∘

and cos30

∘

=

2

3

=sin60

∘

Now,

cos60

∘

cos30

∘

−sin60

∘

sin30

∘

=

2

1

×

2

3

−

2

3

×

2

1

=

4

3

−

4

3

cos60

∘

cos30

∘

−sin60

∘

sin30

∘

=0.