Which classification is correct for a 90° angle?

Convert 6π/5 radians to degrees.

Determine whether 420° and 7π/3 radians are coterminal. Provide the arithmetic justification in degrees.

Which algebraic expression equals cot(θ)?

Evaluate sec(50°) and round to the nearest tenth. (Recall sec(θ) = 1/cos(θ).)

If sin(θ) = √2/2 for an acute angle θ, determine all six trig functions (sin, cos, tan, csc, sec, cot) exactly.

If you have an angle θ and you know the lengths of the opposite side and adjacent side, which trig ratio directly relates those two sides?

Given a right triangle with hypotenuse 13 and one leg 5, find the length of the other leg b (exact value).

You are given a right triangle with one acute angle 28° and one leg adjacent to that angle equals 18. Find all three side lengths (opposite, adjacent, hypotenuse) rounded to two decimals and both acute angles to the nearest degree.

A company uses a simplified model where customer preference vectors lie on the unit circle. Whether the vector (0.8, 0.6) lies on the unit circle?

Compute cot(π/3) and sec(π/2).

A financial model uses θ = 1000° in a periodic forecast. Determine sin1000° by reducing coterminally.