Find value of cos (theta) Share with your friends Share 0 Roopam Pandey answered this Dear student,from the figureIn triangle ABC∠ABC=90°cosθ=BCAC=35sinθ=ABAC=45∠DCE+90°+∠ACB=180° (angles on same straight line)∅+90°+θ=180° ∅+θ=180° -90°∅+θ=90°∅=90°-θcos∅=cos90°-θ=sinθ=45cos∅=45Regards -2 View Full Answer Deepanshu Kunal answered this Hope it helps... -1