Answer:
2.
3. -0.28
4. a.
b.
Step-by-step explanation:
2. Given that
⇒ or
Since x belongs to [0,2π).
Therefore, (Answer)
3. Given that,
⇒ Degrees
{Since is in first quadrant}
So, (Answer)
4. a. Given
b. (Answer)
Answer:
See picture attached:)
Hope that makes sense! If you'd like any more help with maths, I'd be happy to offer online tuition. You can find me at: www.birchwoodtutors.com