For Exercises 7–14, verify the identity. sinxtan?x – sinxr 7. cosxtanx + cosx tanx(tan.x – 1) 3 sin'x – sinx – 2 8. cosxsinx - cos.x 3 tanx + 2 secx 1 1 9. cscx - 1 1 - sinx 10. 2 tanxsecx cscx + 1 cosx 1 + sinx 11. In|cscx| + In|tan.x| = In|sec.x| cosx 12. In/tan.x| – In|sin.x| + In|cos.x| = 0 13. cosx + sin(-x)tan(-x) = secx 14. [csc(-x) + 1](cscx + 1) = -cot?x

Q: For Exercises 3–4, find the LCD of the expressions. 1 cosx sinx sinx 4. cosx' cos?x sinx cosx 3.…

A: Given: 3)  sinxtanx−1; cosxtanx+14)  sinxcosx; 1cos2x; cosxsinx

Q: simplify sin x-1/cos x - cos x /sin x-1

A: The given expression is

Q: Number 17

A: First we break sin^3 x in sin^2x*sin x, and then we replace sin^2 x by 1-cos^2 x.THen in the next…

Q: Write the expression cos (2 sin'x) as an algebraic expression in x, where (-1< x <1). Select one:…

A:

Q: Simplify cos²(4y) - sin²(4y)

A: