26. Simplify the expression cot² -cos² T cot² x cos²x 2 0 2 0 1 о O-2 O-1

Q: 3. Which expression is equal to 02 O O O O 1 -1 -2 sinx-cos X sin² x-cos²x using identities?

A:

Q: 4. Solve cos x = cos 2x for the interval x E

A:

Q: Solve the 6 sin>x -Cos X5 trig guatin

A:

Q: 4. Which is equal to cos? O sin O COS 2π 3

A: Given :cosπ3

Q: Expand and simplify: sin(x+3)-cos(+ x) 6 COS X

A:

Q: ® I co coso de COs o

A:

Q: Verify the identity. (Simplify at each step.) 3 cos(x + y) cos(x - y) = 3 cos(x) - 3 sin²(y)

A:

Q: How many solutions does the equation 25 cos²x 0 < x < 2n? 1 3 4 2 16 have where

A:

Q: . Solve for x: 2 cos x + sin x = 2, 0<x < 27.

A:

Q: 1 1. Use basic identities to simplify the expression secx cos x + cos x secx

A: Since the student has posted multiple questions and does not mention any specific question, so we…

Q: Let x = 7 cos 0,0 <0 < T. Simplify the expression x 49-x²

A: Given that .The objective is to simplify the expression .

Q: (cos x +i sin a)" = cos nx +i sin na -1)

A:

Q: -5 sin x = -2 cos2 x + 4

A:

Q: secx-secx COS x 2+anx sinx-secx

A: Given To simplify sec x -sec x.cos2 x2 tan x - sin x.sec x

Q: e the triangle. For the sides, give an expres B C 101° a A 42° b=40 C

A: Step 1: From the figure, let's write the data:∠A=42∘,∠B=101∘,b=40,we have to find exact and…