Without using a calculator, find the exact value of: a. sin75 b. tan75 c. cos105 d. tan(15)

Question:

Without using a calculator, find the exact value of:

a. sin75°

b. tan75°

c. cos105

d. tan(−15°)

e. sinπ/12

f. cos19π/2

g. cot7π/12

h. sin7π/12

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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 07:17 AM

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Without using a calculator, find the exact value of: a. sin75 b. tan75 c. cos105 d. tan(15)

Question:

Step by Step Answer:

Using the trigonometric identity sinAB sinAcosB cosAsinB we can write sin 75 sin 45 30 sin 45 cos 30 ...View the full answer

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

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