It is known that sin (π / 4 + x) = 12 / 13 (π / 4)

RELATED INFORMATIONS

• 1. The reciprocal of the function formula cos2x is
• 2. Can cos2x-sin2x directly use auxiliary angle formula If not, how to simplify
• 3. The value of SiNx in 2sinx * (- 2 + SiNx) - (- cos2x) * 6 = 0
• 4. Why? F (SiNx) = cos2x = 1-2 (SiNx) ^ 2 Why does f (SiNx) = cos2x have 1-2 (SiNx) ^ 2 equal to them
• 5. Given the function f (x) = [2cos ^ 4x-2cos ^ x + 1 / 2] / [Tan (π / 4-x) sin ^ 2 (π / 4 + x)], find the range of F (x)
• 6. The sum of the first n terms of the continuous sequence an is Sn = 10n-n ^ 2, the general term formula of the ball sequence {Ian I}, and the sum of the first n terms of {Ian I} and HN?
• 7. If the sum of the first n terms of the equal ratio sequence {an} is Sn = a-12n. (1) find the value of the real number a; (2) find the sum of the first n terms of the sequence {Nan}
• 8. Find the convergence domain and sum function of power series ∑ (∞, n → 0) (n + 1) x ^ n
• 9. Can Leibniz criterion be used to judge the convergence and divergence of positive series directly Because when we judge the convergence of conditions, we are judging the convergence of positive series,
• 10. Judge the convergence and divergence of series. ∑ (n = 1 →∞) (radical n + 1 minus radical n)
• 11. What are the minimum and maximum values of y = cos2x + 2sinx?
• 12. (sinx-2cos) / (SiNx + 3cosx) = 2 to find sinxcosx
• 13. x=a(θ-sinθ) y=a(1-cosθ) X = a (θ - sin θ), y = a (1-cos θ). Find d ^ 2Y / DX ^ 2. Dy / DX = cot θ / 2, d ^ 2Y / DX ^ 2 = D / DX * dy / DX = D (dy / DX) / D θ * D θ / DX = D (dy / DX) / D θ * 1 / DX / D θ = I want to ask ha d ^ 2Y / DX ^ 2 how to solve d (dy / DX) / D θ * D θ / DX = D (dy / DX) / D θ * 1 / DX / D θ Z
• 14. If f (x) = sin (π + x) cos (2 π - x) / cos (π / 2 + x), find the value of F (π / 3)
• 15. [(sin α + cos α - 1) (sin α - cos α + 1)] divided by sin2 α
• 16. (sin10 π / 11 * sin8 π / 11 * sin6 π / 11) / (sin π / 11 * SIN3 π / 11 * sin5 π / 11) * 1 / 2 ^ 5 = 1 / 2 ^ 5, how to get this?
• 17. Simplifying cos (2007 π - a) Such as the title
• 18. If 4cos α - (2 + 2 √ 3) cos α + √ 3 = 0, calculate the acute angle α
• 19. The range of function f (x) = x2x2 + 1 is______ ．
• 20. Given the function f (x) = sin (2x + π / 3) - root 3cos (2x + π / 3), write the monotone interval of F (x) and find the range of F (x) on (- π / 6, π / 3)