Step-by-step explanation: In the provided number, O is the centre of a circle, wright here AC is the diameter and OB is the radius. We are to uncover the measure of ∠BAC.

You are watching: Find mbac in circle o. (the figure is not drawn to scale.)

We have

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∠BOC and also ∠BAC are angles at the centre and also at the circumference subtfinished by the arc BC, so

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Hence, (C) is the correct option.




First setting up the first action of the equation3/8*16=?Does 16/1=16? Yes it does! So you deserve to put 16/1 in location of the 16!So, 3/8*16/1= 48/8And 48/8=6The solution is 6! Do you have better questions?

Let"s begin through the illustration. (See the illustration at the bottom of this steustatiushistory.org.)Draw a vertical segment.At the bottom endsuggest, draw a horizontal segment to the best.The angle at the bottom left is a right angle.So far this need to look favor an "L" form.The vertical segment is the wall, and also the horizontal segment is the ground.Now attract a segment that connects the best endsuggest of the horizontal segment and the peak endpoint of the vertical segment. Now you have actually a ideal triangle. The diagonal segment represents the ladder. The diagonal segment is the hypotenuse. Label the diagonal segment, the hypotenuse, 12 ft.Label the vertical segment, the wall, 11.8 ft.The angle at the bottom right is A. It is the angle the ladder renders through the ground. This angle cannot be higher than 75 degrees.Now we usage trigonometry to find the meacertain of angle A.For this appropriate triangle, and also its angle A, you have a hypotenuse that actions 12 ft, and also an oppowebsite leg that measures 11.8 ft.We need to discover angle A.The trig proportion that relates the opposite leg and the hypotenuse is the sine.

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Because the sine of angle A equates to 0.98333, we use the inverse sine function to find the meacertain of angle A.
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steustatiushistory.org:The angle the ladder provides with the ground is 79.5 degrees which is higher than 75 levels, so the ladder it will be unsafe in this position. | | | | opp = | hyp = 12= 11.8 | | |_______ A