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Use the trigonometric subtraction formula

1)Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. cos 12° cos 18°
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2. asked by Alyssa
3. 4,542 views
Use the trigonometric subtraction formula for sine to verify this identity:sin((π / 2) – x) = cos x
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2. asked by Tim
3. 1,514 views
I am really struggling with how to do these problems, I posted them a few minutes ago but the answers/work shown was incorrect.1
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2. asked by Alyssa
3. 4,448 views
Use an addition or subtraction formula to write the expression as a trigonometric function of one number:tan75degrees-tan15degre
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2. asked by Natash
3. 652 views
Thank you Reiny for the last question! :)If you or anyone else could help me with this other question, I'd really appreciate it!
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2. asked by Don'tknowtrig
3. 505 views
Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number.(tan(74°)-tan(14°))/(
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2. asked by Amber
3. 3,019 views
Use an addition or subtraction formula to write the expression as a trigonometric function of one number, and then find its
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2. asked by Shaun
3. 804 views
Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its
1. 2 answers
2. asked by Mark
3. 1,347 views
Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its
1. 1 answer
2. asked by Mark
3. 804 views
Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its
1. 3 answers
2. asked by Mark
3. 1,021 views