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Evaluate the value leaving your answer in surd form

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Evaluate the value leaving your answer in surd...

1.Sin150

2.cos 150

calculus problems

asked Feb 5, 2016 in Trigonometry Answers by McCquabena Bannor Level 4 User (7.5k points)

How the heck can I answer this?

commented Feb 5, 2016 by Mathical Level 10 User (57.4k points)

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1 Answer

sin150=sin(180-150)=sin30=1/2
cos150=-cos30=-sqrt(3)/2

answered Feb 5, 2016 by Rod Top Rated User (1.1m points)

o(-__-)o That is so hard.

commented Feb 5, 2016 by Mathical Level 10 User (57.4k points)

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