Answer:
The correct answer is 319.
Step-by-step explanation:
it is in the given picture.
( don't mind my writing!!)
If you multiply .768 by 1000, you move the decimal point to the right 3 places, giving you 768, so your answer is correct.
<em>Hope this short response helps! :)</em>
The sine of any acute angle is equal to the cosine of its complement. The cosine of any acute angle is equal to the sine of its complement. of any acute angle equals its cofunction of the angle's complement.
A
C
B
Since m∠A = 22º is given, we know m∠B = 68º since there are 180º in the triangle. Since the measures of these acute angles of a right triangle add to 90º, we know these acute angles are complementary. ∠A is the complement of ∠B, and ∠B is the complement of ∠A.
If we write, m∠B = 90º - m∠A (or m∠A = 90º - m∠B ), and we substitute into the original observation, we have:
The formula to find the area of a circle is: π r squared. So, 4.5 π squared = about 63.62
