Answer:
Step-by-step explanation:did u ever find the answer
Now, we know that 90°< θ <180°, that simply means the angle θ is in the II quadrant, where sine is positive and cosine is negative.

Answer:
The answer would be 0.00000007
Answer:
3/4
Step-by-step explanation:
1/4=2/8, 3/8,1/2=4/8, 5/8, 3/4=6/8
2x+38=180
2x=142 (or x+x=142 from which 2x=142)
x=71
The unknown angles are each 71
You know this answer is logical as, since two sides are 21 it hints that we are looking at an equilateral triangle, which means two of its angles will be the same