madim1275
04.07.2019 •
Mathematics
If cos 0=0.3090 which of the following represents approximate values of sin 0 and tan 0, for 0 degrees< 0< 90 degrees?
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Ответ:
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.
Ответ:
Bananas are curved so they can get sunlight.
Step-by-step explanation: