Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 2 - No. 45)
If the adjacent side is 4 cm and the hypotenuse is 5 cm, what is the angle (in degrees)?
30°
37°
53°
60°
Explanation
cos(θ) = 4/5, θ = 36.86 degrees, nearest answer is 37
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