Answer:
1st question = 27 degrees
Step-by-step explanation:
Angles in a circle add up to 360 degrees
2x +21 +5x + 6+ 90+ 54 = 360
7x + 171 = 360
7x = 189
x = 27 degrees
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From my knowledge, I know that cos(30) = ((2)^(1/2))/2, therefore 9cos(30) = 9((2)^(1/2))/2
Answer:
x = 116º
Step-by-step explanation:
the sum of angles on the same side equals 180º so:
x + 64º = 180º subtract 64º from both sides
x = 116º
