Answer:
82%
Step-by-step explanation:
because you have to divide 41 by 50 then,move the decimal 2 places to the right.
We'll assume this is an arbitrary triangle ABC.
A) No, the sines of two different angles can be whatever they want
B) sin(B)=cos(90-B)
Yes, that's always true. The "co" in cosine means "complementary" as in the complementary angle, which adds to 90. So the sine of an angle is the cosine of the complementary angle.
C) No, the correct identity is sin(180-B)=sin B. Supplementary angles share the same sine.
D) Just like A, different triangle angles often have different cosines.
Answer: Choice B
Answer:
Step-by-step explanation:
you need to use the proportions
x=(3*5)/8=15/8
D , because 28-9=21 and 21=x
