Step-by-step explanation:
sin ∅ + 1 = cos2∅
From multiple angles in trigonometry
cos2∅ = 1 - 2sin²∅
So we have
sin∅ + 1 = 1 - 2sin²∅
sin∅ +1 - 1 + 2sin²∅= 0
sin∅ + 2sin²∅ = 0
Factor out sin∅
sin∅ ( 1 + 2sin∅) = 0
sin ∅ = 0
∅ = 0° , 180°
1 + 2sin∅ = 0
2sin∅ = - 1
sin ∅ = -1/2
∅ = 210° , 330°
The solutions are
<h3>0° , 180° , 210° , 330°</h3>
Hope this helps you
Answer:
C:8 <em><u>units</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>r</u></em><em><u>ight</u></em><em><u> </u></em><em><u>and </u></em><em><u>7</u></em><em><u> </u></em><em><u>unit</u></em><em><u>s</u></em><em><u> </u></em><em><u>up</u></em>
Step-by-step explanation:
sana po makatulong Yan
Answer:
9
Step-by-step explanation:
-3/4*(-12)
3/4*12
3*3=9
Answer is 31 +1/4 hours, in other words 31 hours and 15 minutes.