Choose 2 of the 3 identities below to verify. Be sure to show every step. 2(tanx - cotx) a. tan?x- cot?x = sin(2x) b. cos x + 3 TT %D 6. sec?x- 1 C. secxtanx %3D sinx

Q: Find csc-1(4.3) (in radians).  (Hint: Use sin-1)

A:

Q: sec" (*) 1 - tan?(x) cos? (x) %3D sin(x) + sin(x) sin“ (æ) – cos“ (x) = -

A:

Q: sin (30)cos (32) %3D

A: Topic = Trigonometry    using formulascos 2x = 1-2 sin2xcos 2x = 2 cos2x - 1

Q: Prove the identity. secx- tanx = 1 sec x

A: Given,

Q: Verify that it is an identity  (1-sec/tan)+(tan/1-sec)=-2csc

A: We will simplify left side and make it equal to right side

Q: tan² x = tan x

A: tan2x=tanx

Q: { 8. (sin@ + cos@)²

A:

Q: Evaluate tan (cos-¹(-3)) 5

A:

Q: which one of the following is the same as: -cos(-x)tan(-x) a. sinx b. -sinx c. -cotx

A:

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.