ID: 1
Precalculus
20 20 Kota Software LLC A
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Assignment - Double Angle Identities
Find the exact value of each.
1) cos 0 = where 0 S 0 < 90
Find sin 20
2) sin 0 - where 0 so<90
Find cos 20
3) tan 8 = where 0 5 0 <90
Find tan 20
4) sin = where 0 se < 90
Find sin 20
13
5) tan 0 =- where 0 5 0 < 90
Find tan 20
6) sin 0 = - where 0 5 0 < 90
Find sin 20
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Use a calculator to verify that σ(x) = 62, σ(x2) = 1034, σ(y) = 644, σ(y2) = 93,438, and σ(x y) = 9,622. compute r. (enter a number. round your answer to three decimal places.) as x increases from 3 to 22 months, does the value of r imply that y should tend to increase or decrease? explain your answer. given our value of r, y should tend to increase as x increases. given our value of r, we can not draw any conclusions for the behavior of y as x increases. given our value of r, y should tend to remain constant as x increases. given our value of r, y should tend to decrease as x increases.