Answer:
m∠B = 
.
Step-by-step explanation:
Since the three sides of the triangle are given, then we apply cosine rule.
= 
+ 
- 2ac Cos B
But, a = 660 cm, b = 680 cm, and c = 100 cm.
So that;
= 
+ 
-2(660 x 100) Cos B
462400 = 435600 + 10000 - 132000 Cos B
462400 = 445600 - 132000 Cos B
132000 Cos B = 445600 - 462400
= -16800
Cos B = 
= -0.1273
B = 
-0.1273
=
Thus, measure of ∠B is .
Answer:
-4
Step-by-step explanation:
I hope this helps you
s=4 t=8
2.4.8^2-4^2
2.4.64-16
512-16
496
1. Distributive property, because you are "distributing" the 5 across the parentheses.
2. Since we know that 5/10 is 0.5, this term must be close to that. 5/9 is about 0.55555, therefore, I'd go with 5/9 = 0.55
Hope I could help!
