Answer:
A
Step-by-step explanation:
Using the co function identity
sin x = cos(90 - x) = cos(90 - 30) = cos60° ← x = 30°, thus
sin30° = cos60°
Answer:
b
Step-by-step explanation:
hiiii
Answer:
x = 50
Step-by-step explanation:
In a polygon, the angles add up to 360°:
x + 10 + 2x + 3x + x = 360
7x + 10 = 360
7x = 350
x = 50
