Question

sin 210- tan 225 =-3/2​

Answer 1

Answer:

- 3/2

Step-by-step explanation:

=Sin 210 - tan 225

=Sin (180+30) - tan (180+45)

$sin \: (180 + theta) = - sin \: theta$

And,

$tan \: (180 + theta) = tan \: theta$

Now,

= - sin 30 - (tan 45)

= - 1/2 - 1 (sin 30 = 1/2 & tan 45=1)

=-3/2

Proved!!