Question

If X=sin130° + cos130° then 1)X <0 2)X=0 3)X>0 4) X> or equal to 0​

Answer 1

Explanation:

X = sin130° + cos130°

= sin50° - cos50°

= sin50° - sin40°.

sin50° is definitely greater than sin40°, therefore X > 0. (3)