Use a sum or difference formula to find the exact value of the following. 22n 22n cos cos + sin sin 21 21 7

Q: Find the exact value of sin ( I sin 4 %3D

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Q: Write each of the given numbers in the trigonometric form 1 (cos + i sin 0), where -π <π. Give exact…

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Q: Convert this identity to one using sine term(s) only. 1 - 2 cos2r = 2sin²r - 1 -1 - sin²r 1 -…

A: This question is based on conversion of Cos2r = 1 - Sin2r

Q: Show that the following identity is true. cos(90° + 0) = – sin(6)

A: Prove; cos(90° + 8) = – sin(8)

Q: B. cos 285

A: Since you have asked multiple question, we will solve the first question for you as per our guide…

Q: 3π Use a half-angle formula to find the exact value of cos 8 COS 3π 8 0 010 X Ś

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Q: Find the identical expression for the following. 1-cos x 1+cosx

A: Find the identical expression

Q: Find all six trig functions of 0 if cos 6 =

A: Given that  cosθ=56

Q: Verify the identity. (Simplify at each step.) 5 sin? a – 5 sin“ a = 5 cos? a – 5 cos4 a 5 sin? a – 5…

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.