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VARVARA [1.3K]
3 years ago
7

A teacher recommends that students read for 20 minuets each night

Mathematics
1 answer:
Alex777 [14]3 years ago
7 0
They will improve their vocabulary and improve their brain skills to figure out what they want to know.
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Prove this trigonometric equation;<br><br> - tan^2x + sec^2x = 1,
alekssr [168]
Hey there :)

- tan²x + sec²x = 1    or    1 + tan²x = sec²x

sin²x + cos²x = 1 
Divide the whole by cos²x

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1 = - tan²x = sec²x or sec²x - tanx = 1

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