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2sec(11)sec(19)-2cot(71)

  1. 2sec(11)sec(19)-2cot(71)
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    2. hridya asked by hridya
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  2. Prove :cosx-cosy= -2sin(x+y/2)sin(x-y/2)Prove: 2cot-2tanx= 4-2sec^2x / tanx
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    2. Sarah asked by Sarah
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  3. Could someone please help with this question.State the properties of y = 2sec(-2x + 180°) + 3. My answer: First I graphed y =
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    2. Matt asked by Matt
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  4. Prove that the following Trigonometric Identity is valid:1/(sin⁡(y)-1)-1/(sin⁡(y)+1)=-2sec^2 (y) Please any help or clues on
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    2. kat asked by kat
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  5. Am I right on this?2sec^2(2x)-8=0 2sec^2(2x)=8 divide by 2 sec^2(2x)=4 find square root sec(2x)=2 Now, would this simply be
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    2. Alex asked by Alex
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  6. (sec(x) / (sec(x)-1)) - (sec(x) / (sex(x)+1)) = 2cot(x)csc(x)
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    2. Sarah asked by Sarah
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  7. Solve:2cot(x) + sec^2(x) = 0, where 0 <= x <= 2pi
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    2. Math Bruv asked by Math Bruv
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  8. let x+y=tan y. show that y"=-2cot^5y+cot^3y
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    2. help asked by help
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  9. find the period of f(x)=-2cot x/5
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    2. jenna asked by jenna
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  10. If sin theta=1/3then find the value of 2cot^2+2
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    2. preeti asked by preeti
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