Question

please answer this question fastly​

Answer 1

Answer:

sec (π/2+©) = - cosec ©

You can understand this by,

cos (π/2+©) = -sin ©

So,

LHS = (1+cot©+cosec©)(1+cot © - cosec©)

= [(1+cot©)^2 - cosec^2 ©]

= 1+cot^2© - cosec^2© + 2cot ©

= cosec^2 © - cosec^2 © + 2cot © = 2 cot ©

= RHS

Therefore, LHS = RHS

If you have any doubts, kindly ask in the comments section.

Answer 2

Answer:

$m1=2kg</p><p></p><p>m2=3kg</p><p></p><p>T=(m1+m2)g</p><p></p><p>=(2+3)10</p><p></p><p>=(5)10</p><p></p><p>=50N</p><p></p><p>$