Question

given the information in the picture which trigonomic identity can be used to solve for the height of the blue ladder that is leaning against the building​

Answer 1

• Height of tower can be taken as perpendicular
• Base is already given

And we know

`\\ \tt\hookrightarrow tan\theta=(Perpendicular)/(Base)`

`\\ \tt\hookrightarrow tan47=(P)/(30)`

Answer 2

cosine rule - cos =
`(a)/(h)`

Explanation:

Here the ladder is acting as hypotenuse and base as adjacent.

Formula: cosθ =
`(adjacent)/(hypotenuse)`