Answer:
Step-by-step explanation:
Using the difference formula for cosine and the exact values
cos45° = sin45° = , cos30° = , sin30° =
cos(a - b) = cosacosb + sinasinb
Note 15° = 45° - 30°, thus
cos15°
= cos(45 - 30)°
= cos45°cos30° + sin45°sin30°
= ( × ) + ( × )
= +
=
Answer:
9-3=6
Step-by-step explanation:
Line from left to right: number 9 (absolute value)
Line from right to left: number 3 (absolute value)
Overall: 9-3=6
We used the minus sign for 3 because the corresponding line is oriented in the opposite direction.
Answer:
30
Step-by-step explanation:
1/2(12)(5)
<span>Housing expenses would be equal to $586.20.</span>