8368 is 10 more than 8358
Step-by-step explanation:
½ [cos(a − b) − cos(a + b)]
Using sum and difference formulas:
½ [cos a cos b + sin a sin b − (cos a cos b − sin a sin b)]
Distribute the negative:
½ (cos a cos b + sin a sin b − cos a cos b + sin a sin b)
Combine like terms:
½ (2 sin a sin b)
Simplify:
sin a sin b
<h2><em>9.07 > 9.008 is true </em></h2>
Answer: C. 20 inches
Step-by-step explanation:
perimeter= 2 x (4+6)=20 inches
