If tan A + cot A = 5; find the value of tan2 A + cot2 A.
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If sin A + cosec A = 2; find the value of sin2 A + cosec2 A.
Given : 4 sin θ = 3 cos θ; find the value of :
(i) sin θ
(ii) cos θ
(iii) cot2 θ - cosec2 θ
(iv) 4 cos2 θ - 3 sin2 θ + 2
Given : 17 cos θ = 15; find the value of tan θ + 2 sec θ.