Answer:
Choice C. sin 105 = sin(60 + 45) = sin 60 cos 45 + cos 45 sin 60
Step-by-step explanation:
sin(A + B) = sin A cos B + cos A sin B
sin(105) = sin(60 + 45) = sin 60 cos 45 + cos 45 sin 60
Answer: choice C
Answer:
a) a + c = 90
d) a + b + c + 30 = 180
e) The angles marked a and b are vertical
f) The angles marked a and c are complementary.
Step-by-step explanation:
A complementary angle is and angle that has a sum of 90 degrees. A vertical angle is 2 angles facing each other, that are completely identical. 180 degrees is the sum of a strait line. 90 degrees is a right angle.
Hope this helps! Have a wonderful rest of your day!
<em>-kiniwih426</em>
Answer:
I think it is 1
Step-by-step explanation:
I am sorry if it is not correct
Answer:
b
Step-by-step explanation:
Hello!
Angle A has the same one line mark as angle Z. This makes them congruent. The same with B and X, but with a two line mark. This means C is congruent to Y.
This means our answer is D.
I hope this helps!