Solution
Solution
+1
Solution steps
Rewrite using trig identities:
Rewrite using trig identities:
Use the following trivial identity:
Use the following trivial identity:
Use the following trivial identity:
Use the following trivial identity:
Simplify
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Frequently Asked Questions (FAQ)
What is the value of cos(225)cos(150)-sin(225)sin(150) ?
The value of cos(225)cos(150)-sin(225)sin(150) is (sqrt(6)+sqrt(2))/4