Math Trig Ratios Question???

Question

Determine the sin, cos and tan of the marked angle. Then determine the measure of the marked angle.

Answer 1

Sine == opposite/hypotenuse = 2/sqrt(29)
Cosine == adjacent/hypotenuse = 5/sqrt(29)
Tangent == sine/cosine = opposite/adjacent = 2/5

theta = ASIN(2/sqrt(29)) = 20.4 degs.

Answer 2

The angle is 21.8 degrees to the nearest tenth

Answer 3

Correction to oldprof's answer
theta = ASIN(2/sqrt(29)) = 21.8º.

Answer 4

This is a right triangle, yes?
The sin of the drawn θ is the length of the opposite side divided by the hypotenuse. What do you get?
Whats the "formula", the rule for a cos ? For a tan?

Your answers will follow.