In AABC, if C = 90° and BC + CA = 23 cm and BC - CA = 7 cm, then find sin A + sin B.
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BC+CA=23 Equation no1
BC-CA=7 Equation no2
2BC=30
BC=15
put value BC equation no1
BC+CA=23
15+CA=23
CA=23-15
CA=7
(AB)²=15²+7²
(AB)²=225+49
(AB)²=289
AB=17
SinA=15/17
SinB=8/17
SinA+SinB=15/17+8/17
SinA+SinB=23/17
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