Use the descriptions of sine and cosine values to match the possible values of the angl- Descriptions sin (0) > 1, cos(0) < 1 sin (0) = 1, cos(0) = − 1 sin(0) > 0, cos(0) = 0 -sin(0) <0, cos(0) < 0 sin(0)= 0, cos(0) = - 1 sin(0) > 0, cos(0) > 0 -sin(0) 0, cos(0) = 1 sin (0) 0, cos(0) < 0 sin (0) = 1, cos(0) > 0 sin(0) <0, cos(0) > 0 = a. π < 0 < b. Values of e. 2 c. 0 < 0 < d. 0 = 0 3T 2 h. 0 < 0 < T 1 3T 2 f. no such angle exists g. 0 = π T 2 < 0 < 2T 7T 2

I used a half-angle formula to find the exact value of cos 100°.Determine whether the statement makes sense or does not make sense, and explain your reasoning.

Convert to rectangular coordinates and graph p sin o = 2

A certain radioactive substance has a half-life of 3.6 years. Find how long it takes (in years) for the substance to decompose to 10% of its initial amount.