Answer:
-7/-24 or 7/24 simplefied
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
Consider the left side
A + 
A - 2cos²Asin²A ← is the expansion of
= (cos²A - sin²A)²
Substitute sin²A = 1 - cos²A
= (cos²A - (1 - cos²A) )²
= (cos²A - 1 + cos²A)²
= (2cos²A - 1 )²
= right side , then proven
X=21<span>°
</span>y=31.5<span>°
Explanation:
Since it is a whole circle (360</span>°) and there are 40 section (90<span>° each).
2 of the 90</span>° +(180°)<span>are clearly stated there so you do:
360</span>°-180°=180<span>°
</span>
1. On the side that have 2 'y's you do:
90°-(12+15)=63
Then 63/2=31.5<span>°
</span>Therefore y=31.5<span>°
</span>
2. On the side with 3 'x's you do:
90<span>°-(12+15)=63
Then 63/3=21</span><span>°
</span>Therefore x=21<span>°
To cross check you do:
90+90+15+12+21+21+21+15+12+31.5+31.5=360
I hope you find this helpful.</span>
Answer:
The answer is 131072
Step-by-step explanation:
