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2 years ago

Find the 6 trìg functions

Mathematics

1 answer:

mars1129 [50]2 years ago

6 0

I hope this helps you

let's find AB

AB=square root of 2^2+3^2

AB=square root of 13

cosO=2/sqrt13

sinO=3/sqrt13

tgO=3/2

ctgO=2/3

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bio = 258

sociology = 169

============================================================

Work Shown:

x = number of bio textbooks

y = number of sociology textbooks

x+y = 427 books sold total

y = x-89 since 89 less sociology textbooks were sold compared to bio

Apply substitution to get the following

x+y = 427

x+x-89 = 427 ... replace y with x-89

2x-89 = 427

2x = 427+89

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x = 516/2

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y = 258-89

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