Find the exact value of the expressions cos(a + B), sin(a + B) and tan(a+ B) under the following conditions: 15 4 sin(a) =- 17 a lies in quadrant I, and sin(B) = B lies in quadrant II. 5' %3D a. cos(a + B) = (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expres b. sin(a+ B) = (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the express c. tan(a + B) = (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expressi Enter your answer in each of the answer boxes. 80 888 esc F1 F2 F3 F4

Q: Evaluate the following expressions. Your answer must be an angle in radians and in the interval 2' 2…

A: W have to find angle

Q: A. Simplify each of the following expressions. 1. sin?xcotxcscx cotx(sinx+tan.x) cscx+cotxr 3.…

A: 2. cotx sinx+tanxcscx+cotx4. 1-tan2x1+tan2x+1

Q: Which of the following is a valid step in proving the identity 1/ sin theta - sin theta  = cos 2…

A: Given identity 1sinθ-sinθ=cos2θsecθ Find which of the following is valid for proving the above…

Q: Determine sin(2 – 2i) and write the answer in the form a + ib.

A:

Q: (2sin x) -1 Cos

A: cos(2 sin-1x) Let sin-1x=u Taking sin  function on both sides x=sin u

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.