Answer:
Let θ = (45 - A)°.
=> 2Tanθ/ 1 + Tan²θ
=> 2Sinθ/Cosθ / 1 + Sin²θ / Cos²θ
=> 2Sinθ/Cosθ/ Cos²θ + Cos²θ / Cos²θ
=> 2Sinθ/Cosθ/ 1 / Cos²θ
=> 2SinθCos²θ/Cosθ
=> 2SinθCosθ
=> Sin2θ
But we assumed θ = (45 - A)°,
=> Sin2(45 - A)
=> Sin(90 - 2A) (∵ Sin(90 - θ) = Cosθ)
=> Cos2A
= R.H.S
Hence proved.
Step-by-step explanation:
Answer:
3x^2 -9x +8
Step-by-step explanation:
Hopefully this attachment will help you!!!
<u>Good luck!!</u>
Step-by-step explanation:
sorry I was only able to solve E
I hope it helps
the answer is in the image above
Answer:
180 degrees clockwise for fir part and sec i think is counterclockwise of 90 degreees
Step-by-step explanation:
Answer:
An additional student came by to inform me that they lost their phone yesterday (he thinks by the bus station). It is an iPhone 13 in a black case. If anyone has come across it, please bring the device to Mr. Velez in room 112 and on behalf of the student, thank you!
Step-by-step explanation:
2-2=95383479234.5424334