Answer:
cos x
Step-by-step explanation:
sin x = (sin x) / (1) and cot x = (cos x) / (sin x)
Put those fractions next to each other and multiply them out (numerator times numerator, denominator times denominator).
Cancel out the (sin x) in the numerator and denominator
You should be left with just (cos x) / (1), whoch equals just (cos x).
Hope this helps!
62.49-39.99=22.5
22.5/.45=50
Brad was charged for 50 peak minutes.
Answer:
0, π/6, 5π/6, π
Step-by-step explanation:
cos² θ − sin² θ = 1 − sin θ, 0 ≤ θ < 2π
Use Pythagorean identity:
(1 − sin² θ) − sin² θ = 1 − sin θ
1 − 2sin² θ = 1 − sin θ
2sin² θ = sin θ
2sin² θ − sin θ = 0
sin θ (2 sin θ − 1) = 0
sin θ = 0
θ = 0 or π
2 sin θ − 1 = 0
sin θ = 1/2
θ = π/6 or 5π/6
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