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ArbitrLikvidat [17]
3 years ago
5

Please help round to the nearest tenth

Mathematics
1 answer:
Romashka [77]3 years ago
6 0

Answer:

a = 4.6

b = 4.2

Step-by-step explanation:

to find a, use cos:

⇒ cos = \frac{adjacent}{hypothenuse}

⇒ cos 30 = \frac{13}{a}

cos of 30 is 0.154

⇒ 0.154 = \frac{13}{a}

multiply 13 on both sides:

⇒ 0.154 x 13 = \frac{13}{a} x 13

⇒ 4.62 = a

round to the nearest tenth:

⇒ 4.62 = 4.6

⇒ a = 4.6

to find b, use tan:

⇒ tan = \frac{opposite}{adjacent}

⇒ tan 60 = \frac{b}{13}

tan of 60 is 0.320

⇒ 0.320 = \frac{b}{13}

multiply 13 on both sides:

⇒ 0.320 x 13 = \frac{b}{13} x 13

⇒ 4.16 = b

round to the nearest tenth:

⇒ 4.16 = 4.2

⇒ b = 4.2

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