(a) Prove that 1- cos 2.x NT = tan x, sin 2.x (b) Hence solve, for 0 < 0 < 2n, 1- cos 20 3sec? 0 – 7 = sin 20 Give your answers in radians to 3 decimal places, as appropriate.
(a) Prove that 1- cos 2.x NT = tan x, sin 2.x (b) Hence solve, for 0 < 0 < 2n, 1- cos 20 3sec? 0 – 7 = sin 20 Give your answers in radians to 3 decimal places, as appropriate.
Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter1: The Six Trigonometric Functions
Section1.5: More On Identities
Problem 97PS
Related questions
Question
![Q3
(Total 8 marks)
9.
Turn o
9.
P 5 14 O 5 A 0 9 4 4
Leave
blank
4. (а) Prove that
1- cos 2x
= tan x,
sin 2x
2
(3)
(b) Hence solve, for 0 < 0 < 2t,
1- cos 20
3sec? 0 – 7 =
sin 20
Give your answers in radians to 3 decimal places, as appropriate.
(Solutions based entirely on graphical or numerical methods are not acceptable.)
(6)
10
P 5 1 4 0 5 A 0 10 4 4
Leave
blank
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F55beb9c1-b5ca-4a23-8f96-ea3d64328563%2F178b2496-9f35-4379-a8f8-2195216aa5a2%2Fluixuyp_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q3
(Total 8 marks)
9.
Turn o
9.
P 5 14 O 5 A 0 9 4 4
Leave
blank
4. (а) Prove that
1- cos 2x
= tan x,
sin 2x
2
(3)
(b) Hence solve, for 0 < 0 < 2t,
1- cos 20
3sec? 0 – 7 =
sin 20
Give your answers in radians to 3 decimal places, as appropriate.
(Solutions based entirely on graphical or numerical methods are not acceptable.)
(6)
10
P 5 1 4 0 5 A 0 10 4 4
Leave
blank
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
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