Is sqrt(1 - sin^2 θ) = cos θ true? if so, in which quadrants does angle θ terminate?
1 answer:
Answer:
I and IV
Step-by-step explanation:
Since 1-sin(θ)² = cos(θ)², the given equation is equivalent to ...
√(cos(θ)²) = |cos(θ)| = cos(θ)
This will be true where the cosine is non-negative, in the first and fourth quadrants.
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C. is the right answer I think so at least
First solve it, then do the reverse operation to it
2(x + y) or 2y+x or 2x(x + y)
Answer:
56
Step-by-step explanation:
PEMDAS
4+372-320
376-320
56
To simplify that expression you'll join like terms.
8x + 4 - 5
8x - 1
