Trig Fns - Identities
Interactive practice questions
Fill in the blank with the acute angle that makes the statement true.
$\sin$sin$\editable{}$°$=$=$\cos25^\circ$cos25°
Easy
< 1min
Complete the blank in the following expression:
Easy
< 1min
Rewrite $\cos37^\circ$cos37° in terms of its cofunction.
Easy
1min
Rewrite $\sin76^\circ$sin76° in terms of its cofunction.
Easy
< 1min
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