Answer:
actually these trigonometric identies helps us in the problem of height and distance.
actually originated from India trignometic identities are famous all over the world .greek mathematician Pythagoras also has important contribution intrigometry.
it opens up the world of architect and civil engineering to u and lot more
keep exploring
Answer:
Step-by-step explanation:
Which rational function models the time, y, in hours, that it takes the train to travel between the two cities at an average speed of x miles per hour?
✔ y = 160/x
What does the number 160 represent in the rational function that models the situation?
✔distance, in miles, between the cities
amount of fuel, in gallons, used by the train
time, in minutes, needed to travel between the cities
Answer:
It's simple. 4x39=156
Step-by-step explanation:
add 39 4 times. 39+39+39+39=156
Answer:
Step-by-step explanation:
First solve the sums that are within the parentheses.
Remember that if the numbers have equal signs then they are added and the same sign is placed.
If the numbers have different signs they are subtracted and the sign of the major is placed
So:
Then we have the following expression:
Remember that by multiplying signs you get:
(+) * (+) = +
(-) * (-) = +
(+) * (-) = -
(-) * (+) = -
Then: