Mathematics: What is the approximate measure of angle t in the triangle below?

What is the approximate measure of angle t in

Ответ:

Yoma321

18.01.2022

Mathematics

$T=79\degree$

Step-by-step explanation:

Recall and use the cosine rule to find the approximate value of angle T.

$|SU|^2=|ST|^2+|TU|^2-2(|ST|)(|TU|)\cos T$

We plug in the values of the side lengths to obtain;

$4.3^2=3.9^2+2.7^2-2(3.9)(2.7)\cos T$

$18.49=15.21+7.29-21.06\cos T$

$18.49=22.5-21.06\cos T$

$18.49-22.5=-21.06\cos T$

$-4.01=-21.06\cos T$

$4.01=21.06\cos T$

$\frac{4.01}{21.06}=\cos T$

$0.1904=\cos T$

$T=\cos^{-1}(0.1904)$

T=79.02

Angle T is approximately 79 degrees.

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Ответ:

mccarthyrookie6491

01.02.2021

Mathematics

Cost of cooler alone = $ 7.47 Explanation: Method 1: Anton's bill including tax = $ 7.95 6 % of his bill accounts for sales tax. Sales tax = 6 100 × 7.95 ≈ $ 0.48 So cost of cooler alone = Total bill - tax = 7.95 − 0.48 = $ 7.47 Method 2: Anton's bill including tax = $ 7.95 , out of this 6 % is sales tax. This implies 94 % ( 100 − 6 ) of total bill accounts for cooler alone. Cost of cooler alone: = 94 100 × 7.95 = 0.94 × 7.95 = $ 7.47

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What is the approximate measure of angle t in the triangle below?

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