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If cosQ=4/5then evaluate tanQ |
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Answer» CosQ =QR/PQ CosQ=4/5 Let QR=4k and PQ=5k By Pythagoras theorem PQ square= PR square +QR square(5k) square = PR square+ 4k square 9k square=PR square3k = PR TanQ = PR/QR TanQ= 3k /4k TanQ = 3/4 CosQ = b/h = 4/5TanQ = p/b = 3/4 |
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