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Novosadov [1.4K]
3 years ago
15

If cos 0 = -4/7, what are the values of sin and tan ?

Mathematics
1 answer:
ollegr [7]3 years ago
7 0

Step-by-step explanation:

\cos( \frac{ - 4}{7} )

which means base = -4 ,perpendicular = ? ,hypotenuse = 7

let base = x perpendicular = y and hypotenuse = r

according to Pythagoras theorm

r²=x²+y²

y²= x² - r²

=( -4)²-(7)²

= 33

square root both sides

y = √33

value of sin and tan

\sin( \frac{ \sqrt{33} }{7} )

\tan( \frac{ - 4}{ \sqrt{33 } } )

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