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Unformatted text preview:. 46 ) 67 (cos 120 120 67 67 ≈ = = = y y y Cos hyp adj Cos 67 A C B y 27 x a) Find x b) Find y 18 . 32 40 tan 27 27 40 tan 27 40 tan ≈ = = = x x x x 00 . 42 40 sin 27 27 40 sin 27 40 sin ≈ = = = y y y y 40 Ex 3: Using Trigonometric Ra3os in Real-‐life angle of eleva3on x y angle of depression Ex. 4: • You are measuring the height of a Sitka spruce tree in Alaska. You stand 45 feet from the base of the tree. You measure the angle of eleva3on from a point on the ground to the top of the top of the tree to be 59°. tan 59 ° = opposite adjacent tan 59 ° = h 45 45 tan 59° = h 74.89 ≈ h