Recently Active Trignometry Questions

[matrices] is it possible to have AB=I and A does not have an inverse? ...

3sinθ-4cosθ=5,3cosθ+4sinθ=?(plz ans this question in a way that i can understand becoz i am a student of class 10) ...

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3sinθ-4cosθ=5,3cosθ+4sinθ=? ...

Summation of tan-1(1 / 2n+21-n) frm n=1 to infinity equals ? sorry for written question,my latex is not working! ...

Sinx + sin2x=sin3x = 1 cos6x - 4cos4x - 8cos2 = Explain also please ...

Six letters are selected from the word RESOLUTION. the probability that S is included is? a.91/150 b.93/155 c.91/154 d.93/154 i m not getting any of these options?????? ...

find the sum: 1/2n \sum_{}^{}{} tan \pi /2n=? (limit is 2 to infinity) ans-1/ \pi ...

If sin(C+A)/sin(C+B)= sinA/ sinB prove thattan^2C=tanA*tanB ...

1.the no. of total terms in the expansion of (3x-2y)^{7}[1/x+1/y]^{8} ...

Prove that in every triangle we have: ma*mb>=ra*rb*rc. ma is length of median drawn from A, same is mb. ra= exradius of A ...

If A= \begin{bmatrix} x-2 &2 &x \\ 1&2 &3 \\ x-4&-2 & -x \end{bmatrix} and (I+A)^{4} =I + 4A,then (I-A)^{2} =? a.0 b. \begin{bmatrix} -1 &-4 &-6 \\ -1 & -3 &-6 \\ 2& 4 & 7 \end{bmatrix} c. \begin{bmatrix} 0 & 2 &-3 \\ -1& -1 ...

If α≠β and atanα + btanβ = (a+b)tan(α+β)/2, show that, cosα/cosβ = a/b ...

Q1. The value of sin-1(2x 1-x2 ) is (a) 2sin-1x for all x (b) 2sin-1x for lxl < 1 (c) Î - 2sin-1x for lxl > 1/ 2 (d) none of these Q2. A/R Stmnt 1 : If x > 0, y > 0 and x > y, then tan^-^1\frac{x}{y} + tan^-^1\ ...

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If 2tan-1(cos x)=tan-1(cosec2x) ,then x =? a) \Pi /2 b) \Pi c) \Pi /6 d) \Pi /3 ...

i got this as an extra question.....in my bitsat...... sin4(p/8) + sin4(3p/8) + sin4(5p/8) + sin4(7p/8) don remembr the options xactly but were lyk 1 2 1/2 3/2 ...

Q If \frac{cos^{4}x}{cos^{2}y}+\frac{sin^{4}x}{sin^{2}y}=1 Then prove that \frac{cos^{4}y}{cos^{2}x}+\frac{sin^{4}y}{sin^{2}x}=1 ...

Q. What is the domain and range of the function sin-1[x] where [.] represents GINT ...

α= π/7 now prove 1) prove that cosecα=cosec2α+cosec4α ...

the solution set of the equation tan(Î tanx)=cot(Î cotx) ...

solve sin^{7}x +cos^{7}x=1 ...

81sin2x + 81cos2x =30, then the least value of x,(x>0) is what? plz help! ...

please post your methods so that we can have a good discussion its not a difficult one Prove that \frac{\sin ^{3}a}{sinb}+\frac{cos^{3}a}{cosb}\geq sec(a-b) for all 0< a,b <Ï€/2 ...

if 2<m<=4 and cosA = 1/2 ((m-2)(m+2)/m-1) .... 2b=ma prove that there are 2 values of thee third side which are in the ratio (m-1):1 ...

Show that there is exactly one value of x satisfying 2cos^{2}(x^{3}+x)=2^{x}+2^{-x} ...

The value of cos(2pie/7) + cos(4pie/7) + cos(6pie/7) + cos(7pie/7) 1. 1 2. -1 3. 0.5 4. -1.5 cmon guys kill it....its an easy 1 i think ...

1] the expressions 1+x , 1+x+x2 , 1+x+x2+x3 ,...........,1+x+x2+x3+.................+xn are multiplied together and product of the terms thus obtained are arranged in the increasing powers of `x` in the form of a0+a1x+a2x2 +. ...

had bunked POT last yr becuz it was very booring ...... now i face the heat ... if b c and B are given and let c > b ....... if A1,A2 be 2 possible values of A ......... find the value of cos[(A1 - A2)/2] ................. ...