find all the angles between 0 and 360 degrees which satisfy the equation cos 30=1 upon 2
Answers
Answered by
0
Answer:
sin x = -1/2.
sin 30° = 1/2 , so 30° is the reference angle.
The angles we are looking for have negative sine value,so we are working in the 3rd and fourth quadrants.
3rd quad : x = 180° + 30° = 210°.
4th quad : x = 360° - 30° = 330°.
Answered by
3
Step-by-step explanation:
Given: cosec θ+2=0
⇒sinθ=−
2
1
⇒θ=(π+
6
π
), (2π−
6
π
)
⇒θ=
6
7π
,
6
11π
⇒θ=210
°
,330
°
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