Question

what is the cosine of θ? cosθ=−?/blank ( −12/13,−5/13 )

Explanation:

Step1: Recall the cosine formula for a unit - circle

For a point \((x,y)\) on the unit - circle \(x^{2}+y^{2}=1\), \(\cos\theta=x\). Here, \(x =-\frac{12}{13}\), so \(\cos\theta=-\frac{12}{13}\)

Answer:

\(\cos\theta =-\frac{12}{13}\), so the green box is \(12\) and the gray box is \(13\)