If sin (90 - θ) cos θ = 1 and θ is an acute angle, then θ = ______ Share with your friends Share 1 Ashutosh Verma answered this Answer : We have : sin 90° - θ cos θ = 1⇒cos θ . cos θ = 1⇒cos2θ = 1⇒cos θ = ±1⇒cos θ = 1 or cos θ = -1⇒θ = 0° or θ = 180° rejected -1 View Full Answer Pawan Galli answered this then value of that angle is zerO....... 3 Mihir Arora answered this Theta is zero Ans......... 1
