Answer:
Step-by-step explanation:
O.5917
Should be ur answer
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:
In the customers, there are some people that will choose pesto and alfredo together. Then, if you add P(pesto) and P(alfredo) directly to calculate the P(pesto or alfredo) you will add the P(pesto and alfredo) twice. So the P(pesto and alfredo)= 0.42+0.86-0.93=0.35.
