Answer:
-816
Step-by-step explanation:
you subtract 9-21 to get -12 then you take 7+61 which is 68 and then you multiply them to get -816
-12*68= -816 this is probably wrong but this is what i got
(-8,-4)
(y,-x)
Answer: v = 18
hope i help you
plz give me a hart
D
Using the addition formula for sine
sin(a + b) = sinacosb + cosasinb
and the exact values
sin( ) = cos( ) = , cos() = , sin() =
Note that = + , thus
sin()
= sin( + )
= sin()cos( ) + cos()sin()
= ( × ) + ( × )
= +
= → D
Answer: C (16).