Solve sin\theta +1 = cos2\theta

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

Hope this helps you

spinning a 1, 2, or 3. option d.

step-by-step explanation: when spinning a number graph up to 4, and aiming for any number less than 3, that automatically eliminates the number 4. now you have two numbers to spin on that are less than 3, but the number 3 is included in this question because it's no greater of an number than itself. i hope this you : )

45

step-by-step explanation: