Question

I need help in math can you please help me

Answer 1

`(\cos(u)\sec(u))/(\tan(u))=(\cos (u)\sec (u))\mleft|(1)/(\tan (u))\mright|`

The first box contains 1/tan(u)

`=(\cos (u)(1)/(\cos(u)))|\cot (u)|`

The second box constains cot(u). Now, simplifying cos(u) we have:

`=|\cot (u)|`

The last box contains cot(u)

I used "| |" to identify the boxes.