Let sin A = - with A in QIV and find sin (2A) = Preview TIP Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 243, 5+4) Enter DNE for Does Not Exist, oo for Infinity Get Help: Video Points possible: 1 License This is attempt 1 of 3. Post this question to forum SubmitLet sin A = with A in QII and find cos (2A) = Preview TIP Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 243, 5+4) Enter DNE for Does Not Exist, oo for Infinity Get Help: Video Points possible: 1 License This is attempt 1 of 3. Post this question to forumLet tan A = with A in Q/ and find the follow. Answer exactly, do not round. tan (2A) = Preview TIP Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 243, 5+4) Enter DNE for Does Not Exist, oo for Infinity Get Help: Video Points possible: 1 License This is attempt 1 of 3. Post this question to forum Submit