The value of $$ cot\ {π\over 20}\ cot{3π\over 20} \cot{5π\over20}\ cot{7π\over 20}\ cot {9π\over20}$$ is:
1298 05f6450e8e318e06cd33b79b2If tan α = 2, then the value of $$ {cosec^2 α - sec^2 α}\over{cosec^2 α + sec^2 α} $$ is :
1284 05dd38171bfcbc45cddedd890If tan (11 θ)=cot (7θ), then what is the value of sin2(6 θ) + Sec2 (9 θ) + cosec2(12 θ)?
1278 05fc0e22d96415e6951a99e17What is the value of sin2 60° + cos230°+ cot2 45° + sec2 60° – cosec2 30° + cos2 0°.
1274 05f155723cf79540a7533c1ca