Turn sin(2x) into 2sin(x)cos(x) and solve.
the equation should be in the book.
you also need to know your unit circle
I might be wrong though
The first pair of triangles are similar.
Triangle ABC is similar to Triangle PQR.
I used the SSS theorem of congruency.
( side - side - side) since I knew the sides were equal I knew that they were congruent.
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The second pair of triangles are similar too.
Triangle ABC is similar to Triangle DEF.
I also used the SSS theorem of congruency.
Since I knew what the sides were, I did some calculations and they all equalled 6...
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I hope that helps you out!! Any more questions??
The way I would do this is convert everything into a common denominator. Therefore, the cheese block is 15/20 inch thick and each slice is 2/20 inch thick. Then 15/2 would be 7 with a remainder of 1 so you can cut 7 slices and have 1/20 inch of cheese left over.
Ok so I will do only one and only put the answer for the others
ok so nearest xmm means that you havet o find teh smalles then largest so
1. legnth times width=area
so find max and min area
5 mm eror
legnth=645
width=400
so the legnth and witdth could be area
640 (subtract 5 for rerror) and 395 (subtract 5 for error
or
650 (add 5 for error) and 405 (add 5 for error)
so areas could be
640 times 395=252800
650 times 405=263250
upper bound=263250 mm^2
lower bound=252800 mm^2
so basically subtract the error to find minimum possible area and then add error to original measues to find max possible area
2. upper bound=29 m
lower bound=27 m
3. perimiter=2(L+W)
2((145-5)+(28-1))=lower bound=334 m
2((145+5)+(28+1))=upper bound=358 m
4. (35-1)(26-1)=lower bound=850 cm^2
(35+1)(26+1)=upper bound=972 cm^2
5. 2 sig figs (not sure about this question as much)
nonzeros are significant
30 is 1 sig fig since 0 is not significant
therfor
30.9 to 30.0
18=2 sig figs so that is alreight
upper bound of width=18
30.9 times 18=upper bound=556.2 cm^2
30.0 times 18=lower bound=540 cm^2
ANSWERS
1. upper bound=263250 mm^2
lower bound=252800 mm^2
2. upper bound=29 m
lower bound=27 m
3. lower bound=334 m
upper bound=358 m
4. lower bound=850 cm^2
upper bound=972 cm^2
5. upper and lower bound o 18=18
upper bound=556.2 cm^2
lower bound=540 cm^2
i’ll tell you on discord, add me there my user is ri#0511
