2. What is the exact value of cos (22.5°) using the half-angle identities? O √2+√2 √2-√2 O √2-√2 O √2+√2

Q: 6. Choose the best answer. cos a and sin 3 /3 find cos 2 If sin - x 2 6 V3 O 1 O v2

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A: Follow the procedure given below.

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Q: How many diagonals can be drawn from one vertex of a 7-sided polygon?

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A: topic-trigonometric equations

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A: Solving the problem by finding the required value.

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Q: Find the exact value of tan (75◦)

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Q: riangle GIH is similar to triangle KJL. Select two angles whose tangent equals 6868.       A ∠G…

A: Given  Triangle GIH is similar to triangle KJL.

Q: ctg sqrt(3)/3 equals to 30 degrees? How to convert this arctg to degrees? what is the proccess? and…

A: we have to prove arctg(sqrt3/3)=30 degreearctan(33)=arctan13                         =arctan(tan30°)…

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Q: Write the complex number in standard form. (Simplify your answer completely.) 37 6 cis 4

A: We have to find out

Q: What is the 7th term in the n= 8 row of Pascal's Triangle? A 28 B 35 C 56 D 70

A: 7th term and 8th row  means 7*8 =56 Multiply that by 3 and divide by 6 = 28 56*3/6 =28 so option A…

Q: 13. Evaluate the fTunction. Give the exact value. cos tan(V3) cos(arctan( v36 = 0.5

A: Solve the following

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A: Topic:- geometry

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Q: Prove the identity. cos = -sin e We begin on the left side of the equation by using a Sum Formula.…

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Q: The Law of Cosines must be used when only the measures of two sides and the included angle are known

A: Law of cosines

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Q: 1. With respect to the given angle, what is the ratio of the hypotenuse to the opposite side? a.…

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Q: Evaluate 2 cos ( 3x – when x is 4

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A: Topic:- trigonometry ratios

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Q: Explain the derivatives and integration.

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Q: Find the quadrant where tan 405° lies, its reference angle, and also the exact value.

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Q: What ordered pair is a solution to the following system of equations? x + y = 12 xy = 35

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Q: Exercise 5.4 1. sin 0=0,5 Cos 0= 0,922 c) tan 0= 2,8765 1,9 d) sin 0 = 2,6 2 tan 0 = 1 202 ) 3 cos 0…

A: Just use inverse trigonometry