Question

find the value of sin 210​

Answer 1

Answer:

sin(−210

∘

)

=−sin(210

∘

) since sin(−θ)=−sinθ

=−sin(180

∘

+30

∘

)

=−(−sin30

∘

) since sin(180+θ)=−sinθ

=sin30

∘

=

2

1