Solution Of System Of Linear Inequalities In Two Variables

We are given two unit vectors and , and the angle between them is .
The formula for the dot product of two vectors and is:

Since and are unit vectors, their magnitudes are both 1, so: Now, we need to calculate the expression: Substitute into the expression: Use the distributive property of the dot product: Since and , and , the expression becomes: Simplify:
Thus, the value of the expression is , and the correct answer is option (D).