Answer:
1/8
Step-by-step explanation:
sin²(π/8) − cos⁴(3π/8)
Use power reduction formulas:
1/2 (1 − cos(2×π/8)) − 1/8 (3 + 4 cos(2×3π/8) + cos(4×3π/8))
Simplify:
1/2 (1 − cos(π/4)) − 1/8 (3 + 4 cos(3π/4) + cos(3π/2))
1/2 (1 − √2/2) − 1/8 (3 + 4 (-√2/2) + 0)
1/2 − √2/4 − 1/8 (3 − 2√2)
1/2 − √2/4 − 3/8 +√2/4
1/2 − 3/8
1/8
Answer: What is the question?
Step-by-step explanation:
No 7/3 is equal to 2 1/3 while 3/7 is 3/7 (less than 1)
Answer:
$43.38
Step-by-step explanation:
Step 1 : find 20% of price
To do this, all you have to do is multiply the decimal version of the percent (20% --> 0.20) by your full price
36.15 × 0.20 = 7.23
Step 2 : add tip to total cost
now we get that tip we got in the first step and add it to 36.15
36.15 + 7.23 = $43.38
