Question

Find the values of 60°

cos 2 45°

− 3 tan 30° + 5 cos 90°​

Answer 1

Answer:

Answer

Now,

cos

2

45

o

sin60

o

−3tan30

o

+5cos90

o

=

2

1

2

3

−3×

3

1

+5×0 [ Using the values of sin, cos and tan 's]

=

3

−

3

+0

=0.