78. sin² 20 1 + cos 20 = 2 sin²0

Q: Evaluate if x=4,8,3,-2 ∑x ∑x+1 ∑(x+1) 3∑x - 4

A: Given that  if x=4,8,3,-2

Q: evaluate exactly cos-1(-3/2)

A: -3/2 lies outside the domain of the function. Hence we will have no solution

Q: Evaluate the exact value of 4 /5 tan sec 4

A: The objective is to evaluate the exact value.

Q: If you enter a number into a handheld calculator and then repeatedly press the cosine button, what…

A: If you enter a number into a handheld calculator and then repeatedly press the cosine button, what…

Q: Evaluate tan² (-a) se c5 (-a) da

A: Given problem:- ∫ tan5(-x) sec5(-x) dx

Q: How do you know whether it is associative and has an identity

A: Here, we have to check for associativity and identity element.

Q: Use th Start! 1- cos 2x

A: Given:1-cos2x/cos2x To simplify we use some trigonometric properties

Q: We expect a car's highway gas mileage to be related to its city gas mileage. Data for all 1198…

A:

Q: at the point functron fts

A: The given function is fx=x4-7x2+11 at the point 2,-1. The tangent line of the given function is…

Q: I don't understand why don't you include Hg,Hgf,Hgf^2 and Hgf^3 in the answer for distinct right…

A: Here,

Q: Write a few paragraphs outlining your strategy for establishing identities.

A: For establishing identities following strategies can be adopted. Try to understand the identity…

Q: Evaluate f₁ tan 2 sec zda +C

A:

Q: Please use Venn diagram shading to solve- AU(BnC)

A: The detailed solution is as follows below:

Q: Prove that A (An(BnC)) =A\(BC) is an identity by starting with A\(An (BNC)) and then transforming…

A:

Q: Explain why sin-1 3 is not defned.

A:

Q: Prove cos4x=8cos4x-8cos2x+1

A: To prove:- cos(4x)=8cos4(x)-8 cos2(x)+1