Question: Given that cos A = 1/3, and that A is obtuse, a. Find the exact value of: i. cos 2A ii. sin A iii.

Given that cos A = − 1/3, and that A is obtuse,

a. Find the exact value of:

i. cos 2A

ii. sin A

iii. cosec 2A

b.

show that tan 24 = 42 7

show that tan 24 = 42 7

Step by Step Solution

★★★★★

3.36 Rating (180 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

a i b tan 2... View full answer

blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Pearson Edexcel A Level Mathematics Questions!

Q:

Find the exact value of each expression. a. b. c. d. -14 sin sin sin(sn(-3) sin sin cos (cos (-45))

Q:

Without using your calculator, find the exact value of: a sin 30 cos 60 + cos 30 sin 60 c sin 33 cos 27 + cos 33 sin 27 e sin 60 cos 15 - cos 60 sin 15 tan 45 + tan 15 1 tan 45 tan 15 g i tan 7 12...

Q:

In Exercises 1-4, find the exact value of the expression. 1. sin / 12 cos / 4 + cos / 12 sin / 4 2. cos / 16 cos 3 / 16 - sin / 16 sin 3 / 16 3. cos 130 cos 10 + sin 130 sin 10 4. sin 100 cos...

Q:

13. (10 pts) Show work (a) Find the exact value of arcsec(2). (b ) Find the exact value of tan arccos V2 2 (c ) Find the exact value of arccos COS 4TT 2 (d) Find the exact value of arcsin cot 3It 3...

Q:

In Exercises 9 14 use the given information about the angle to find the exact value of a sin 20 b cos 20 c tan 20 9 sin 0 0 in quadrant II 5 13 11 tan 04 sin 0 0 12 sec 0 3 sin 0 0 13 tan 0 2 0 T 2 3...

Q:

8. Given sec0 = -6, sketch the angle in standard position and find csco and tan 0, where 0 terminates in quadrant III. 5 pts 9. Find the exact value. 10 pts (a) tan (b)arccos (--z) (c) arctan (tan...

Q:

1 The point P x y is on the unit circle in Quadrant IV If x VII 6 find y 2 The point P in the figure at the left has y coordinate Find a sin t b cos t c tant d sec t 3 Find the exact value 7 6 a sin...

Q:

Exercise Set 5.3: Graphs of the Tangent, Cotangent, Secant, and Cosecant Functions (f) Give an interval, if one exists, on which f ( x ) = tan ( x ) is increasing. Then give an Answer the following....

Q:

Exercise Set 6.1: Sum and Difference Formulas Simplify each of the following expressions. 1. sin ( x ) 2. 3 cos x + 2 3. cos x 2 4. sin ( + x ) 5. sin 60 + sin 60 + 6. cos 60 + cos 60 + 7. cos x +...

Q:

13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57 -> please show all work 402 Chapter 5 Analytic Trigonometry See www.CaleChat.com for worked out solutions to odd mambe, 5.4 EXERCISES In Exercises...

Q:

Jumana Company incurred the following costs during the year ended 28 February 2020: (A)- $34,000 on salaries for market research staff sent out to canvass teachers' opinions on a potential new smart...

Q:

If going abroad for a full-immersion assignment is not possible, what are some substitutes for a global assignment that may provide somealbeit limitedglobal experience? There is nothing like an...

Q:

2. The best way of improving the productivity of capital is: (a) Purchase automatic machines, ( ) (b) Effective labour control, ( ) (c) To use good financial management, ( ) ( d) Productivity of...

Q:

What do you see as the limits of broadband communications? Can you elaborate?

Q:

What test can be used to compare the standard deviation of diet record vitamin C intake between current smokers vs. nonsmokers? Nutrition The EPIC-Norfolk study, a study of diet and cancer in Great...

Q:

Perform the test in Problem 8.168, and identify whether there is a significant difference between the two variances (i.e., is p .05?). Nutrition The EPIC-Norfolk study, a study of diet...

Q:

What test can be performed to compare the mean diet record vitamin C intake between the two groups? Nutrition The EPIC-Norfolk study, a study of diet and cancer in Great Britain, was performed to...

Q:

In November, one of the processing departments at Shelp Corporation had beginning work in process inventory of $36,000 and ending work in process inventory of $24,200. During the month, the cost of...

Q:

Help Save&Exit Submit Also record the entry that shows the payment of the 5% tax on this sale to the state government on October 15. OS Journal entry worksheet Record the cash sales and 5% sales tax....

Q:

Lifo method Questions: Following transaction in respect of material (A) occurred during the six months ended December 31,2019. Date Purchases Unit 2,200 Price per unit $ 2,5 issues 2,500 July August...