Sử dụng Wolfram Alpha để tính toán?

The derivative of 1/cos(x) is tan(x)sec(x). This can be found using the quotient rule, or through trigonometric identities, since 1/cos(x) = sec(x). sinex ex. 5. lim x→0. 1 - cosx x. 6. lim x→0 tan10(2x20) sin. 200. (3x). Page 5. Trig computations. Using that lim x→0 sinx x. = 1, compute the following limits ... • solve(cos(x)/sin(x) = 1, x). «2, 00)U(-00,-2»n({~ -v n s k I kEl} \{rrok I ... 1 - cosx. I + cosx. 7. Define the following domains using the relations ... cosx +1 = cosx − cosπ = ∞. ∑ k=1. (−1)k+1. (2k)!. (π − x)2k cos 2x − 1 ... 1/sinx and −1/cosx which do not belong to [−1,1]. Even on R, not ... Jan 24, 2023 ... I tried running it around with one identity that I know, but I am stuck with cos2(x), it should be cos(x) from the answer that is in my textbook but I can't ... Solve for a variable, factor, expand, evaluate fractions, linear equations, quadratic equations, inequalities, systems of equations, matrices. Free Trial Available! Download App p r o v e (1−cos( x ))(1+cos( x )) =tan 2 ( x 2 ) Solution True Show Steps (1-cos x)/sin x=tan⁡(x / 2) Hence, it can be concluded that the value of (1-cos x)/sin x is equal to tan (x/2). We have to find the derivative of . We will differentiate this expression with respect to x . Therefore, the given expression's derivative is − 1 1 − cos ⁡ x. (1 - cos x)(1 + cos x) = 1 - cos 2 x. By using trigonometric identity, sin 2 x + cos 2 x = 1 1 - cos 2 x = sin 2 x (1