Answer:
Sine, cosine and tangent formulas are used in RIGHT triangles. So you have one 90 degree angle and two acute angles that add up to 90 degrees (they are complimentary). So the cosine of one angle would be the same as the sine of the compliment to that angle... and vice versa. To answer this question, sin 81 = cos 9, since 81 and 9 are the two acute angles of the triangle and they both add up to 90 degrees. "Cos 9" is the answer when you wish to write "sin 81" in terms of "cosine."
Please give me brainiest
Step-by-step explanation:
20% of the coins are dimes, and 10 coins are selected, so the expected number of dimes is 0.20 * 10 = 2.
So the number generator is fair. It shows that 20% of the coins selected are dimes most of the time.
Step-by-step explanation:
<h3>=80°-15°</h3><h3>=65°</h3>
please mark this answer as brainlist
Answer:
I pretty sure it's 3/14
Step-by-step explanation:
There are 6 small fish and 8 large fish- find the total. 6+8=14 (14 will be the denominator)
Half of the small fish are red so 6/2=3 (3 is the numerator)
The probability of you picking one small red fish is 3/14
Answer:
y= 2/7x+ 43/7
Step-by-step explanation:
When finding the y intercept, or B, you should use slope intercept and plug in your coordinate. It should look like this: 7=2/7(3) +b. Multiply 3 and 2/7 to get 6/7. Now, this is your equation: 7=6/7+b. Next, subtract 6/7 from both sides to get 43/7. So, your y-intercept is 43/7. This is your final equation: y= 2/7x+ 43/7. Hope this helped!
