Question

Question number 3 please

Find the question below in the attachment.

Answer 1

hope you'll understand

Answer 2

Ф + α = 90

So, α = 90 - Ф

Cot α = Cot (90- Ф)

We know that

Cot (90- Ф) = tanФ

So cot α = tanФ

CotФ = 3/4

So cot α = 4/3