Answer:
42%
Step-by-step explanation:
Answer:
ok
Step-by-step explanation:
Answer:
0
Step-by-step explanation:
just did it. hope it helps
we can change cos to sin by saying cosx=sin(90-x)
now we drop sin and make the angles equal (nothing needs to be added or subtracted since its in the first quadrant)
90-x=20+x+k.360.......kEZ (k is an element of set of integers) (we say k.360 if it's cos and sin and k.180 if it's tan)
-x-x=20-90+k.360........kEZ
-2x=-70+k.360.........kEZ
divide all terms by -2
x=35-k.180.......kEZ
Answer:
4x+7y
4(3/4) +7(-1/3)
3-7/3
=2/3
please mark as brainliest