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The given pair of angles are vertical opposite angle pair so, they are equal. i.e
Answer:
i. <DCB = ![53.13^{o}](https://tex.z-dn.net/?f=53.13%5E%7Bo%7D)
ii. Sin of <DCB = 0.8
Step-by-step explanation:
Let <DCB be represented by θ, so that;
Sin θ = ![\frac{opposite}{hypotenuse}](https://tex.z-dn.net/?f=%5Cfrac%7Bopposite%7D%7Bhypotenuse%7D)
Thus from the given diagram, we have;
Sin θ = ![\frac{4}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B5%7D)
= 0.8
This implies that,
θ =
0.8
= 53.1301
θ = ![53.13^{o}](https://tex.z-dn.net/?f=53.13%5E%7Bo%7D)
Therefore, <DCB =
.
So that,
Sin of <DCB = Sin ![53.13^{o}](https://tex.z-dn.net/?f=53.13%5E%7Bo%7D)
= 0.8
Sin of <DCB = 0.8
Answer:
72
Step-by-step explanation:
8/9 + 3/8
Multiply the denominators to get the common denominator
9x8 = 72.