ᴡʜɪᴄʜ ᴏꜰ ᴛʜᴇ ɢɪᴠᴇɴ ᴄɪʀᴄᴜʟᴀʀ ꜰᴜɴᴄᴛɪᴏɴ ɪꜱ ᴘᴏꜱɪᴛɪᴠᴇ? ᴀ. ᴄᴏꜱ (−₃π/₅) ᴄ. ꜱᴇᴄ (₄π/₇) ʙ. ꜱɪɴ (₁₁π/₄) ᴅ. ᴛᴀɴ (₅π/₆)

ᴡʜɪᴄʜ ᴏꜰ ᴛʜᴇ ɢɪᴠᴇɴ ᴄɪʀᴄᴜʟᴀʀ ꜰᴜɴᴄᴛɪᴏɴ ɪꜱ ᴘᴏꜱɪᴛɪᴠᴇ? ᴀ. ᴄᴏꜱ (−₃π/₅) ᴄ. ꜱᴇᴄ (₄π/₇) ʙ. ꜱɪɴ (₁₁π/₄) ᴅ. ᴛᴀɴ (₅π/₆)

Algebra for College Students

10th Edition

ISBN:9781285195780

Author:Jerome E. Kaufmann, Karen L. Schwitters

Publisher:Jerome E. Kaufmann, Karen L. Schwitters

Chapter2: Equations, Inequalities, And Problem Solving

Section2.4: Formulas

Problem 64PS

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Question

₁₁. ᴡʜɪᴄʜ ᴏꜰ ᴛʜᴇ ɢɪᴠᴇɴ ᴄɪʀᴄᴜʟᴀʀ ꜰᴜɴᴄᴛɪᴏɴ ɪꜱ ᴘᴏꜱɪᴛɪᴠᴇ?
ᴀ. ᴄᴏꜱ (−₃π/₅) ᴄ. ꜱᴇᴄ (₄π/₇)

ʙ. ꜱɪɴ (₁₁π/₄) ᴅ. ᴛᴀɴ (₅π/₆)

₁₂. ɪꜰ ᴄᴏꜱʙ = −₅/₁₃ ᴀɴᴅ ʙ ɪꜱ ɪɴ ᴛʜᴇ ᴛʜɪʀᴅ Qᴜᴀᴅʀᴀɴᴛ, ꜰɪɴᴅᴛᴀɴʙ + ꜱᴇᴄʙ.

ᴀ. −₅ ᴄ. ₅
ʙ. −₁/₅
ᴅ. ₁/₅

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