Answer:
f= -14
Step-by-step explanation:
Answer:
See explanation
Step-by-step explanation:

By the distributive property this is equal to:

Hope this helps!
Cot x = cos x / sin x
cot π/4 = cot 45° = cos 45° / sin 45°
We know that sin 45° and sin 45° have the same value:
cos 45° = sin 45° = √2 / 2;
cos 45° / sin 45° = √2/2 : √2/2 = 1
Answer:
cot π/4 = 1
You can make 4 out of 18 cubes
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