ix) tan8 - tan5 – tan3 = tan8 tan5 tan3
Answers
Answered by
5
Tan8-Tan5-Tan3 = Tan8 Tan5 Tan3
Tan(90-8)-Tan(90-5)-Tan(90-3) = 1/Cot 82 1/cot85 1/cot87
hence it divide
1-1-1
=-1
Tan(90-8)-Tan(90-5)-Tan(90-3) = 1/Cot 82 1/cot85 1/cot87
hence it divide
1-1-1
=-1
Answered by
7
Answer:
tan8-tan5-tan3=tan8tan5tan3
Step-by-step explanation:
we have
tan8=tan5+tan3/1-tan5tan3
tan8(1-tan5tan3)=tan5+tan3
tan8-tan8tan5tan3=tan5+tan3
tan8-tan5-tan3=tan8tan5tan3
L.H.S.=R.H.S.
HENCE PROVED
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