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1 answer:
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Answer:
x=πn, n∈Z
Step-by-step explanation:
if sin²2x=1-cos²2x, then
1-cos²2x-2cos2x+2=0; ⇒ cos²2x+2cos2x-3=0; ⇔ (cos2x+3)(cos2x-1)=0;
Answer:
Sven used Sugar.
Step-by-step explanation:
The question gives the amount of each ingredient left after making the cake.
= 0.25 - Flour
= 0.33 - Butter
= 0.50 - Sugar
= 0.625 - Eggs
It says that Anna used most of her ingredients, this means she has used the ingredients which has the least amount left. The lowest out of the fractions above is . So Anna used Flour.
Also Olaf used the least of his, meaning he has most of his ingredient left. Highest value in the list is . So Olaf used Eggs.
Kristoff used more than Sven, means that Kristoff has less of his ingredient left compared to Sven. So lower value out of the values left goes to Kristoff, that is . So Kristoff used Butter.
So we are left with Sugar and Sven.
So Sven used Sugar.