SOLUTION: 1. The number of radians the minute hand will rotate in 35 minutes is...?
2. the reference angle for 222.2 degrees is....?
3. Use identities to find tan A if sec A = 7/3 and A is
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Question 940224: 1. The number of radians the minute hand will rotate in 35 minutes is...?
2. the reference angle for 222.2 degrees is....?
3. Use identities to find tan A if sec A = 7/3 and A is in quadrant IV?
4. The signs of sec 444 degrees and tan 444 degrees are....?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1. The number of radians the minute hand will rotate in 35 minutes is...?
Ans: (35/60)2pi = 3.665 radians
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2. the reference angle for 222.2 degrees is....?
Ans: 222.2-180 = 42.2 degrees
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3. Use identities to find tan A if sec A = 7/3 and A is in quadrant IV?
sec = r/x, so r = 7 and x = 3
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Note:: y is negative in QIV
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Then y = -sqrt[7^2-3^2] = -sqrt(40) = -2sqrt(10)
Ans: tan(A) = y/x = -2sqrt(10)/3
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4. The signs of sec 444 degrees and tan 444 degrees are....?
444-360 = 84 degrees
sec(444) = sec(84) is positive in QI
tan(444) = tan(84) is positive in QI
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Cheers,
Stan H.
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