If cos 0=0.3090 which of the following represents approximate values of sin 0 and tan 0, for 0 degrees< 0< 90 degrees?

Step-by-step explanation:

Please use the word "theta" or an actual Greek letter to denote angle.  Even tho' I catch your drift, your "cos 0 = 0.3090" was at first confusing.

Keep in mind the following facts:  

(sin theta)^2 + (cos theta)^2 = 1

tan theta = sin theta  /  cos theta

Thus, if we start with cos theta = 0.3090, and want sin theta, we use the Pythagorean Theorem:  (sin theta)^2 = 1 - (cos theta)^2.

Here, (sin theta)^2 = 1 - (0.3090)^2

                               = 1 - 0.0955, or 0.9045.  

                                   Thus, sin theta +√0.9045 = +0.9511.

We now know both sin theta and cos theta, and can easily find tan theta from the formula above:

                    sin theta        0.9511

tan theta = = = 3/-880

                    cos theta        0.3090

The second answer is the correct one.

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

yes

step-by-step explanation:

yes