Question

What is b? how would i find the measure of b?

Answer 1

In the given right triangle ABC

we have that

`cos(A)=(AC)/(AB)\text{ ----> by CAH}`

substitute given values

`\begin{gathered} cos40^o=(b)/(280) \\ solve\text{ for b} \\ b=280*cos40^o \\ b=214.49\text{ in} \end{gathered}`

therefore

The answer is b=214 inches