Question

Sec 50 sin 40 -Cos 40 Cosec 50

Answer 1

Answer:

0

Step-by-step explanation:

$\frac{ \sin(40) }{ \cos(50) } - \frac{ \cos(40) }{ \sin(50) }$

$( \sin(40) \sin(50) - \cos(40) \cos(50) ) \div ( \cos(50) \sin(50) )$

we know that

$\cos(a + b) = \cos(a \cos(b) ) - \sin(a) \sin(b)$

then we get

$- \cos(90) \div ( \cos(50) \sin(50)$

which is equal to zero

hope this will help u

Answer 2

Answer:

=1.036*0.642-0.766*1.305

=0.665112-0.99963

=0.334518