Solve the system using linear combinations. –5x + y = 1 9x – 2y = 4
2 answers:
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Answer:
6 + 4 × -2/4 = 4
Step-by-step explanation:
hi hope u understand
Answer:
θ = -33.69°
Step-by-step explanation:
For Φ>0 and Φ<0 (in general Φ≠nπ where n is an integer), sin(Φ) ≠ 0
Dividing both equations:
Therefore:
arctan(θ) = -2/3
θ = -33.69°
The answer does not depend on the sign of Φ, in fact we just need that the sine does not become zero, which occurs when Φ is equal to an integer times π (radians) or 180 (degrees)
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