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rama64
03.10.2019 •
Mathematics
The value of sin (180+x) is equivalent to
a)-sinx
b)-sin (90-x)
c)sinx
d)sin (90-x)
if sec (a+15) =csc (2a) find the smallest positive value of a in degrees.
and q38
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Ответ:
Ответ:
2 units long