Question

find the value of sin330°.cos120°+cos210°sin300°​

Answer 1

Answer:

hey mate here is ur answer

use form.cos90-A= sin A

so answer is 1 +1=2

Answer 2

Answer:

sin330=-sin30

cos120=-cos60

cos210=-cos30

sin300=-sin60

Using these values

(1/2)(1/2)+(√3/2)(√3/2)

1/4+3/4=1