Answer:
(c) Pi/4
Step-by-step explanation:
3pi/4 = (3 x 180) / 4 = 135 degrees
135 degrees is equivalent to (180 degrees - 135 degrees) 45 degrees
45 degrees = Pi/4
Therefore, the reference angle of 3pi/4 is Pi/4
Thus, the correct option is (c) Pi/4
Unit rate is 3. equation is 21÷7=3
Answer: Angle of elevation of sun at that time is 24.51° .
Step-by-step explanation:
Since we have given that
Height of a large totem pole near Kalama, Washington = 100 feet
Length of a shadow at noon = 219 foot
We need to find the angle of elevation of sun at that time .
As we know the formula for "Tangent ":
Hence, Angle of elevation of sun at that time is 24.51° .
Answer : no triangle
Explanation : To be considered a triangle, it has to be 180 degrees
The time it will take to cover another distance of 145 miles is; 2.5 hours
<h3>How to solve proportion word problems?</h3>
We are given;
First distance driven = 348 miles
Time taken for first distance = 6 hours
Formula for speed is;
Speed = Distance/Time taken
Thus;
Speed for fist distance = 348/6
Speed = 58 mph
Now, at the same speed she wants to cover another distance 0f 145 miles. Thus;
Time taken = distance/speed
Time taken = 145/58
Time taken = 2.5 hours
Read more about proportion word problems at; brainly.com/question/13818690
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