<span>sin 90° = 1
</span>
cos 0° = 1
There's a simple formula : <em>sin θ = cos (90°- θ)</em> or <em>cos θ = sin (90°- θ) </em>
So : cos 0° = sin (90° - 0°) = sin 90° = 1
Answer:
6 times
Step-by-step explanation:
If Andrea jumps 5 times every 45 minutes, she will jump 1 time every 9 minutes. 54 divided by 9=6 times. Hope it helps!
9514 1404 393
Answer:
6 h
Step-by-step explanation:
The bottom number in the table is half the top number. The missing value is 6 (hours).
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I like to put the variable in the numerator of a proportion. Here, we can write it as ...
t/12 = 45/90
Multiplying by 12 gives ...
t = 12(45/90) = 12(1/2) = 6
It will take Darin 6 hours to mow 12 lawns.
3445 divided by 13 is 265.
1. 3.81 = 3.8 because 8 is in the tenths place and you rounded it. 1 is less than 5 so the number stays the same.
2. 72.27 = 72.3 because 2 was in the tenths place and you rounded it by 7. 7 is more than 5 so the number changes to 3.
The number beside the number you want to round on the left must be equal or more than 5.
3. 167.79 = 167.8 4. 67.04 = 67 5. 1.356 = 1.36 6. 0.048 = 0.05
7. 8.333 = 8.33 8. 1.9973 = 2 9. 7.4 = 7 10. 171.68 = 172
11. 0.0018 = 0 12. 600.55 = 601
