Math, asked by jitendrasonkar1970, 5 months ago

(ii) tan 56°=
cos 11° + sin 11°÷
cos 11° - sin 11°

Answers

Answered by shaikhbadrunnisha87

1

Answer:

ANSWER

cos11

∘

−sin11

cos11

∘

+sin11

=

cos11

∘

(1−tan11

∘

)

cos11

∘

(1+tan11

∘

)

=

1−tan45

∘

tan11

∘

tan45

∘

+tan11

∘

as (tan45

∘

=1)

=tan(45

∘

+11

∘

)

=tan56

∘

LHS=RHS

Hence proof

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