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Answer:
1. (a) -√5
2. 3/5
Step-by-step explanation:
1. sec²(θ) = tan²(θ) +1
sec²(θ) = (-2)² + 1 = 5
sec(θ) = ±√5
In the second quadrant, secant is negative, so ...
sec(θ) = -√5
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2. cos(θ) = 1/sec(θ)
cos(θ) = 1/(5/3)
cos(θ) = 3/5
Answer:
Main Idea: The Sun isnt the biggest nor the hottest star
The largest stars, called supergiants, are 1,500 times bigger than our sun.
Blue stars are the hottest.
It is a medium sized yellow star.
Step-by-step explanation:
Read carfeully
Have a nice day :)
Answer:
18. ∠AED= ∠BEC (vert. opp. ∠s)
2x -11= 105
2x= 105 +11
2x= 116
x= 116 ÷2
x= 58
∠AEB= 180° -105° (adj. ∠s on a str. line)
∠AEB= 75°
∠BEC= 105° (vert. opp. ∠s)
∠CED= ∠AEB (vert. opp. ∠s)
∠CED= 75°
∠AED= 105° (given)
19. ∠AEB +∠BEC= 180° (adj. ∠s on a str. line)
6x +19 +x= 180
7x +19= 180 <em>(</em><em>simplify</em><em>)</em>
7x= 180 -19 <em>(</em><em>-19</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>
7x= 161 <em>(</em><em>simplify</em><em>)</em>
x= 161 ÷7
x= 23
∠AEB= 6(23) +19
∠AEB= 157°
∠BEC= 23°
∠CED= ∠AEB (vert. opp. ∠s)
∠CED= 157°
∠AED= ∠BEC (vert. opp. ∠s)
∠AED= 23°
Answer:
<u>The area of trapezoid is:</u>
<u>Since the area is less than 18 cm², the inequality is:</u>
<u>Simplify by dividing both sides by 6:</u>
Answer: 9 weeks
Step-by-step explanation:
-0.1³ + 0.6x² + 85 = 70
x ≈ 8.21998224
The answer is 9 weeks because you must round 8.22 up to 9. The reason you round up to 9 is because must include the numbers after the decimal in a week, but you cannot have 0.22 weeks, so 0.22 rounds up to 1.
