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6. Determine the exact value of cosA and tanA if sinA=7/4 and π/2≤A≤π a) cosA= ? b) tanA= ? 7. Find the exact value of
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6. Determine the exact value of cosA and tanA if sinA=7/4 and π/2≤A≤π a) cosA= ? b) tanA= ? 7. Find the exact value of
6. Determine the exact value of cosA and tanA if sinA=7/4 and π/2≤A≤π a) cosA= ? b) tanA= ? 7. Find the exact value of each a) sin(67π) b) tan(−415π) 8. Find the exact value of each (express in terms of π ) a) tan−1(−31) b) cos−1(−21)
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