Step-by-step explanation:
Let x represent theta.
Using the angle addition trig formula,
Multiply one side at a time
Replace theta with x , the answer is
2. Convert 30 degrees into radian
Using tangent formula,
Tan if pi/6 is sqr root of 3/3
Since my phone about to die if you later simplify that,
you'll get
Replace theta with X.
Answer:
option C: 120
Step-by-step explanation:
total marks = 5× 100 = 500
marks he obtained = 380
marks he lost = 500 - 380 = 120
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The Number of people is 12 when time taken is 2 hours.
According to the statement
Time taken when 10 people works is 3 hours
Time taken when 5 people works is 8 hours
Then we have to find the number of peoples when time taken is 2 hours.
So, average time that for which single person works is 180 min/ 10 = 18 min.
It means the average time for single person works is 18 min in case of 10 people.
and one thing is clear that the number of people is greater than 10 people when time taken is 2 hours.
So, The Number of people is 12 when time taken is 2 hours.
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-2.4x^2 -1.5x-11.4 is the answer