Answer:
<u>Step-by-step explanation:</u>
Given: cos x = , x is in Quadrant 4
Use Pythagorean Theorem to find sin x:
8² + y² = 17²
y² = 17² - 8²
y² = 289 - 64
y² = 225
y = 15
→ sin x =
Use the double angle formula to find cos (2x):
How would you estimate the price if a shirt that usually costs $32.99 is on sale for 25% off?
2 answers:
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Answer:
45.50° F
Step-by-step explanation:
As per Newton's law,
When T(t) is the final temperature
= Temperature of surrounding
= Initial temperature
t =duration of cooling
k = constant
Now take natural log on both the sides
4.6347 - 5.0434 = -5k
k = 0.0817
=
= 155 (02935)
= 45.49 ≈ 45.50° F