Question

if tan theta = 20/21 find the value of 1 -sin theta + 4 cos theta / 4 sin theta + cos theta​

Answer 1

Step-by-step explanation:

all you hv to do is find the value of sin theta and cos theta nd substitute it in the equation.

Sin Theta = P/H

now H= _/P^2 + B^2 (using pythogoras theorem)

H= _/ 400 +441

H = _/841

H= 29

So Sin theta = 20/29

and Cos theta = 21/29 .

Now substitute these values in the equation. I cannot substitute it for you since the equation is not clear to me if a picture of the question wud be provided it wud be easier to understand. Anyways, You can substitute values of sin theta and cos theta in the equation and get your answer. I hope you have understood how it has been found.