Answer:
We have sinθ = 12/13
The method here is to figure out the value of θ
Using a calculator sin^(-1)(12/13) =67.38°
67.38° is in quadrant 1 so we must substract 67.38° from 180° wich is π
- 180-67.38= 112.61° ⇒ θ= 112.61°
Now time to calculate cos2θ and cosθ using a calculator
- cosθ = -5/13
- cos2θ = -0.7
The values we got make sense since θ is in quadrant 2 and 2θ in quadrant 3
Hey there!
4/7 + 5/6
≈ 24/42 + 35/42
≈ 24 + 36/ 42 - 0
≈ 59/42
≈ 1 17/42
Therefore, your answer is:
59/42 or 1 17/42
EITHER OF THOSE SHOULD WORK BECAUSE THEY ARE EQUIVALENT.
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
