Question

(cot 30º.cot 60º – 1) ÷ (cot 30º+ cot 60º) = cot 90º को सिद्ध कीजिए।

Answer 1

Answer:

Sin(30º)⨯sin(60º)+cos(45º)⨯tan(60º)

=(1/2)(√3/2) +(1/√2)(√3)

=(√3/4)+(√3/√2)

=(√3/4)+(√3x2√2/4)

=(√3+2√6)/4

Hope it helps u....

#faheem