Pre-calc/trig Suppose that θ=arcsin(1/7) in the first quadrant. What is cos(θ/2)? (round to 4 decimals)

asked Oct 4, 2023 193k views

13 votes

Pre-calc/trig

Suppose that θ=arcsin(1/7) in the first quadrant. What is cos(θ/2)? (round to 4 decimals)

by Yngve

7.0k points

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6 votes

Answer:

0.9974

Explanation:

$arcsin( (1)/(7) ) = 0.1433 \\ cos( (0.1433)/(2) ) = 0.9974$

Pierre L answered Oct 9, 2023

6.8k points

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