Prove that : tan88 - tan50 - tan30 =tan80.tan50 .tan30
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Step-by-step explanation:
tan80 = tan50 + tan30 / 1-tan50 ×tan30
tan80-tan80 tan50 tan30 = tan50+tan30
tan80-tan50-tan30 = tan80×tan50×tan30
HENCE PROVED
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