Question

cos(40-theta)-sin(50+theta) is equal to _____​

Answer 1

Answer:

0

Step-by-step explanation:

Cos(40-α) - sin(50+α)

According to Identity:

[Cos(α)=Sin(90-α)]

Converting Cos to Sin

Sin(90-(40-α))- Sin(50+α)

Sin(90-40+α)- Sin(50+α)

Sin(50+α)- Sin(50+α)

= 0

Answer 2

Answer:

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