Answer:
<h2>x = -6</h2>
Step-by-step explanation:

Step-by-step explanation:
sina = -√3/2




=±1/2
Since, π<a<3π/2
cos a = -1/2


OptionB
<h2>
Explanation:</h2><h2 />
Hello! Remember you have to write complete questions in order to get good and exact answers. Here I'll help you assuming some things. First of all, for a two dimensional shape, the perimeter is defined as the distance around it. Suppose we have a rectangle whose dimensions are:

So in this context:
Correct option is D. 10x - 20
42 because 42-12=30 hope dis helped my guy