Prove that tan theta+tan 2theta+tan

  1. sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),cos(2theta),tan(2theta) exactlysin(2theta) cos(2theta)
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    2. Sally asked by Sally
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  2. Write each identity expression in terms of:1. cos theta= a. sin^2theta---------- sec^2theta-1 2. tan theta= a. sec theta over
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    2. san-san asked by san-san
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  3. prove 3cos theta - cos3theta = 2cos theta cos2theta + 4sin theta sin 2theta
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    2. Cindy asked by Cindy
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  4. sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),cos(2theta),tan(2theta) exactlysin(2theta) cos(2theta)
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    2. Larry asked by Larry
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  5. given that 1/2pi<theta<pi and sin theta=1/5, use appropriate trigonometric formulas to find the exact values of the following
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    2. Sarah asked by Sarah
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  6. 1. Which expression is equivalent to cos 2theta for all values of theta ?cos^2 theta – sin^2 theta ~ cos^2 theta – 1 1 – 2
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    2. Kelsey asked by Kelsey
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  7. which statements are true select all that applyA) tan^2 theta=1-sec^2theta B) cos theta= cot theta/ csc theta C) 1/ sec^2 theta=
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  8. Find cotangent theta given that cosecant theta equals -3.5891420 and theta is in the third quadrant.I was using the trig
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    2. Maddy asked by Maddy
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  9. 1)Find cos theta if sin theta=3/5 and 90 degrees<theta<180 degrees.A)4/5 B)-4/5 C)square root of 34/5 D)-square root of 34/5 I
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    2. Jon asked by Jon
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  10. PROVE: Cos 2theta = .5 (cot theta - tan theta)Please help me
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    2. Mike asked by Mike
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