Zoe Austin

Questions

• How do you solve this and write in factored form? Sec^2x-secx+tan^2x
• If cosine of x equals (-4/5) and tan of x is greater than 0, the value of sine x is???
• Give 2 co- terminal angles and the reference angle for 215?
• How to solve x^2 + (sinx)^2 = 1?
• What can you say about the shape of the curve # f(x) = 7 cos( 1/3 x ) + \sqrt{19} sin( 1/3 x ) # ?
• Given that there exists a triangle whose sides are a,b,c. Then prove that there exists a triangle whose #sqrta,sqrtb,sqrtc#?
• If #2costheta=x+1/x# then prove that the value of the #x^n+1/(x^n), ninN# is #2cosntheta#?
• The max value of 4sin^2x+3cos^2x is Options are 4,3,7and 5?
• If in triangle ABC #sin^(2)A+sin^(2)B+sin^(2)C=2# then the triangle is options are below?
• If tan x = -3/4 and pi/2<x<pi find values of cos x and sin x?
• Prove that {(cos^-1) 4/5+(tan^-1)3/5} = (tan^-1)27/11 ?
• What is the asymptote of #sec(x+90°)#?
• How do I find the period of the graph, #f(x)=sqrt(sin^2(x/4)#, without graphing?
• How do you evaluate sec 135?
• Prove by vector method that #sinA/a=sinB/b=sinC/c#?
• How do you verify #secx-tanx=(1-sinx)/cosx#?
• How do you solve #2 cos x - 5 sin x = 3 #?
• Prove this equation is an identity? secx/tanx- tanx/secx=tanx/cscx
• Please help? Solve the equation fro exact solutions over the interval (0degrees, 360 degrees)
• How do you prove cos^2a + cos^2(2π/3 + a) + cos^2(2π/3 - a) = 3/2? a = alpha Thanks!
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