Given that cosA = - 4/5 and sinB = -8/17 and that A and B lie in

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Given that cosA = - 4/5 and sinB = -8/17 and that A and B lie in the same quadrant, find the value of:

a. sin(A + B)

b. cos(A + B)

c. tan(A − B)

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Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook

ISBN: 9781108407199

1st Edition

Authors: Sue Pemberton, Julianne Hughes, Julian Gilbey

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Question Posted: Mar 14, 2023 07:18 AM

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Given that cosA = - 4/5 and sinB = -8/17 and that A and B lie in

Question:

Step by Step Answer:

To solve this problem we need to use the trigonometric identities for sine cosine and tange...View the full answer

Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook

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