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Teacher plays April Fool's prank on maths class

Teacher plays April Fool's prank on maths class

(2:11) Maths teacher gets his trigonometry help video all wrong.

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Guest: math is fun (959 days ago)

Teacher gives only two digits for the Sin and Cos functions so it will produce incorrect answers.

sin(opposite/hyp) = .29
b/100 = .29, therefore b = 29

cos(adjacent/hyp) = .96
a/100 = .96, therefore a = 96

However, sqrt(96^2 + 29^2) = 100.28595 Close but incorrect.

Use b = 28 and a=96 and you get sqrt(96^2 + 28^2) = 100 but that would not be 17 degree angle.

Using the correct sin and cos, you should get
a=95.6304755963035, b=29.2371704722737, hyp = 100 and angle =17

ReplyVote up (134)down (111)
Original comment

Teacher gives only two digits for the Sin and Cos functions so it will produce incorrect answers.

sin(opposite/hyp) = .29
b/100 = .29, therefore b = 29

cos(adjacent/hyp) = .96
a/100 = .96, therefore a = 96

However, sqrt(96^2 + 29^2) = 100.28595 Close but incorrect.

Use b = 28 and a=96 and you get sqrt(96^2 + 28^2) = 100 but that would not be 17 degree angle.

Using the correct sin and cos, you should get
a=95.6304755963035, b=29.2371704722737, hyp = 100 and angle =17

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Siddubarra Siddubarra (958 days ago)

You shall not Sin

ReplyVote up (114)down (95)
Original comment

You shall not Sin

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ReligiousNut ReligiousNut (957 days ago)
Latest comment:

You are all sinners.

ReplyVote up (106)down (103)
Original comment
Latest comment:

You are all sinners.

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