Which relationship in the triangle must be true?
2 answers:
Cosine stands for "complementary sine." The sine of an angle is the cosine of the complementary angle and vice versa. Complementary angles add to 90°.
Answer: sin(B) = cos(90 - B)
It's true for any angle, and it doesn't have much particularly to do with a triangle.
COS(B)=sin(180-B).
Because a triangle have a 180 degree angle
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its A because the Y intercept is at 3
Answer: No
Step-by-step explanation: Because it is.
10x= -8x + 36
-8x -8x
———————-
2x= 36
— —
2 2
X=18
Answer: isolate the variable by dividing each side by factors that don't contain the variable.
x is less than or equal to 15
