solvefor c,cos^2(x)+cos(x)=sin(x)

解答

求解

c, cos^{2} (x) + cos (x) = sin (x)

对所有 c 为真; cos^{2} (x) + cos (x) = sin (x)

求解步骤

cos^{2} (x) + cos (x) = sin (x)

两侧相等

对所有 c 为真; cos^{2} (x) + cos (x) = sin (x)

sin (3 0^{\circ}) = (\frac{x}{81})

so l v e f or x, y = 2 \cdot x \cdot cos^{2} (y)

so l v e f or c, sin^{3} (x) + cos^{3} (x) = 4 cos (x) - 2 sin (x)

so l v e f or c, 3 (sin (x) + cos (x)) - sin^{2} (x) - 1 = 0

so l v e f or t, cot (x) cot^{2} (x) = - 1