<span>3
--- </span>-2 = 8<span>
y
</span>3
--- = 8+2
y
3
--- = 10
y
3
3
y = ------
10
Answer:
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Step-by-step explanation:
A=4,
b=3,
c= 2
a² + b² -2abcosC =c²
a² + b² - c² = 2abcosC
2abcosC = 4² + 3² -2² = 16 + 9-4= 21
Answer : B.21