a bridge across a river makes an angle of 45 degree with the bank of a river if the length of the bridge across the river is 100 M find the width of the river
Answers
Answered by
2
there fore width of the river is 86.6m
Attachments:
Answered by
1
Answer:
tan(θ)=
adjacent
opposite
Find the angle of elevation:
\tan(\theta) =\dfrac{\text{30 - 1.5}}{\text{28.5}}tan(θ)=
28.5
30 - 1.5
\tan(\theta) =\dfrac{\text{28.5}}{\text{28.5}}tan(θ)=
28.5
28.5
\tan(\theta) = 1tan(θ)=1
\theta = tan^{-1}(1)θ=tan
−1
(1)
\theta = 45 \textdegreeθ=45\textdegree
Answer: The angle of elevation is 45°
Similar questions