Trigonometric Operations

Questions (2)

Let P=(cosA sinA)(sinA cosA) Q=(cosB sinA) (sinB cosA) show that PQ=(cosA(A-B) sin(A B)) (sinA(A B) cos(A-B))
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2. asked by James
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Complete the identity sin theta / cos theta + cos theta / sin theta = ?Do you mean (sin theta/cos theta) + (cos theta/sin theta)
1. 1 answer
2. asked by Robert
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