" (ii) "2cot^(-1)5+cos^(-1)7+2cot^(4)theta=(pi)/(4)

2cot^(-1)5+cot^(-1)7+2cot^(-1)8=(pi)/(4)

2 cot ^(-1) 5+cot ^(-1) 7 + 2 cot ^(-1) 8=(pi)/(4)

2cot^(- 1)5+cot^(- 1)7+2cot^(- 1)8=pi/4

Prove that 2cot^(-1)5+ cot^(-1)7 + 2cot^(-1)8 =pi/4

Prove that cot^(-1) 7 + 2 cot^(-1)3 = pi/4

Prove: cot^(-1)(1/2)-1/2cot^(-1)(4/3)=pi/4

4 cos 36^(@) + cot 7 (1^(@))/(2)=

The value of sin\ (1/2cot^(-1)(-3/4))+cos(1/2cot^(-1)(-3/4)) is/are equal to-

If tan (pi cos theta)= cot (pi sin theta) , show that cos (theta-(pi)/(4))=+- (1)/(2sqrt(2))

Find sin^(-1)(sin theta)*cos^(-1)(cos theta),tan^(-1)(tan theta),cot^(-1)(cot theta) for theta in((5 pi)/(2),3 pi)