sinA=.....+cosA

1 answer

let sinA = x + cosA
x = sinA - cosA
x^2 = sin^2 A - 2sinAcosA + cos^2 A
x^2 = 1 - 2sinAcosA
x^2 = 1 - sin 2A
x = +/- sqrt(1-sin(2A)), |sin 2A| <= 1

not sure if that is what you want.

Since I squared the equation, any (A,x) would have to be verified

Ask a New Question or answer this question.

Similar Questions

Hi, can someone give me the answer to this question:secA-tanA=1/4. Find cosA I got: CosA=4(1-sinA) Is my answer good? Now
1. 2 answers
Hello I am having trouble with proving this:sinA/secA+secA/cscA = tan(A)(2-sin^2(A)) So far I've gotten SinA/(1/cosA) +
1. 1 answer
Prove that [sinA/(1-cosA)-(1-cosA)/sinA]*[cosA/(1+sinA)+(1+sinA)/cosA]=4cosecAI the second part as 2 secA
1. 1 answer
Let P=(cosA sinA)(sinA cosA) Q=(cosB sinA) (sinB cosA) show that PQ=(cosA(A-B) sin(A B)) (sinA(A B) cos(A-B))
1. 0 answers