Point P lies on the unit circle in the first quadrant at angle 8 shown below, and has coordinates (a, b). a. Kiara says that b =

Question

Point P lies on the unit circle in the first quadrant at angle 8 shown below, and has coordinates (a, b).
a. Kiara says that b = √1-a². Do you agree or disagree with Kiara? Explain your reasoning.
b. Assume a = 4/5 and b = 3/5.
i. Find sin(-θ)
ii. Find sin(2θ)
iii. Find θ, rounding your answer to the nearest tenth of a degree.

Kunduz · Accepted Answer

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