4. If A = 65° and B = 30°, verify the following (a) sin (A - B) = – InterviewSolution

1.	4. If A = 65° and B = 30°, verify the following (a) sin (A - B) = sinA.cosB - COSA.sinB. (b) cos (A + B) = COSA. cosB - sinA.sinB .tanA - tanB
Answer» I FOUND:a=6.761≈7c=5.276≈5

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