Given cos 25° approx 0.9063, what is sine of complementary angle?

[vlonejose]

Given cos 25° approx 0.9063, what is sine of complementary angle?

Given the value of cos 25[FONT=&quot]°[/FONT]
[FONT=&quot]≈[/FONT]
0.9063, enter the sine of a complementary angle. Use an expression relating trigonometric ratios of complementary angles.

cos 25[FONT=&quot]°[/FONT]
= ____ ° [FONT=&quot]≈ ____
[/FONT]

 

[HallsofIvy]

Do you know what "complementary angles" are? Do you know what "complementary angles" have to do with a right triangle? Do you know how "sine" and "cosine" are defined?

 

[vlonejose]

No

Do you know what "complementary angles" are? Do you know what "complementary angles" have to do with a right triangle? Do you know how "sine" and "cosine" are defined?

i actually dont.. this is the reason im here . i just need the 4 questions i posted :/

 

[stapel]

i actually dont.. this is the reason im here . i just need the 4 questions i posted :/

Since, as you state, you have no knowledge of any of the pertinent terms, us giving you the answers would be useless (as well as unethical). If you're thinking of cheating your way past a placement test, don't. Let the test place you into the course for which you are best prepared. Anything else is a recipe for frustration. ;-)