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Calculation of combined electrical resistance between A and B
Calculation of combined electrical resistance between A and B
Answer: R = 19.62616822 (Ω)
Cosine formula
Cosine formula
In the figure below, a = 14.7 cm b = 17.8 cm θ = 43°32’54". What is the length of c?
Cosine formula:
c = √a2 + b2 − 2 ab cos θ =
= √14.72 + 17.82 − 2 × 14.7 × 17.8 × cos(43°32’54")
The angle mode is DEG.
Answer: c = 12.39480134 (cm)
Coordinate transformation
Coordinate transformation
Calculate r and θ in the expression below.
5 + 6i = r (cos θ + i sin θ)
Rectangular Form
Polar Form
The angle mode is DEG.
Answer: r = 7.810249676, θ = 50.19442891°
Time calculation
Time calculation
The time calculation of sexagesimal numbers is performed after they are converted into decimal numbers.
16 hours 7 minutes 21 seconds + 7 hours 56 minutes 47 seconds
Answer: 24 hours 4 minutes 8 seconds
Degree and quantity conversion calculation
Degree and quantity conversion calculation
Convert 100 °C into Fahrenheit
Answer: 212 °F
Compound interest calculation
Compound interest calculation
The principal is $50,000. The yearly interest rate is 5%. What is the total after 5 years, including interest?
Formula:
FV = PV {1 + i}n
FV — Amount including interest
PV — Principal
i — Interest
n — Year
The total amount, including compounded interest after 5 years is
FV = 50000 × {1 + 0.05}5
Answer: $63,814
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