Labour costs, totalling $47.25, account for 63%
of a car repair bill. Calculate the total bill.
Answers
Answer:
Taking LHS:
sin 105° + cos 105°
cos (90° - 105°) + cos 105°
cos 15° + cos 105°
cos C + cos D = 2(cos(C+D)/2)(cos(C-D)/2)
2cos(120°/2)cos(90°/2)
2cos60°cos45°
2(1/2)cos45°
cos45°
= RHS
Step-by-step explanation:
Taking LHS:
sin 105° + cos 105°
cos (90° - 105°) + cos 105°
cos 15° + cos 105°
cos C + cos D = 2(cos(C+D)/2)(cos(C-D)/2)
2cos(120°/2)cos(90°/2)
2cos60°cos45°
2(1/2)cos45°
cos45°
= RHS
sin105+cos105=1/√2 prove this question
Calculating the Hamming Code
Mark all bit positions that are powers of two as parity bits. (positions 1, 2, 4, 8, 16, 32, 64, etc.)
All other bit positions are for the data to be encoded. ...
Each parity bit calculates the parity for some of the bits in the code word. ...
Set a parity bit to 1 if the total number of ones in the positions it checks is odd.
Step-by-step explanation:
63% of car repair bill = Labour cost?
63 / 100 of CRB = LC
63 / 100 of CRB = 47.25
CRB = 100 / 63 * 47.25 after rearranging
CRB = $75
Total bill = 47.25 + 75 = $122.25