If sin θ = 3/5, find the value of cos θ, where θ is an acute angle.

In a right-angled triangle, sin θ is:

Define the six trigonometric ratios of an acute angle of a right-angled triangle.

If cos θ = 12/13 and θ is acute, find sin θ and cot θ.

If sin A = 5/13 and A is acute, find cos A and tan A.

Prove that sin²θ + cos²θ = 1 for an acute angle θ.

If tan θ = 3/4, find sin θ and cos θ for an acute angle θ.