69 • 420 = 28,980
√29980 = 173.15
Answer:
B
as [tex]\cos(\theta)=\srqt{1-\sin^2(\theta)}\[tex]
and since theta is in second quadrant, where cosine is negative,
so -√(1-z²)
8.5
Step-by-step explanation:
When you go from negative to negative by going backwards you add positive.
