If tan 3x = sin 45° cos 45° + sin 30°, find the value of x.
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From the adjoining figure, find
(i) tan x°
(ii) x
(iii) cos x°
(iv) use sin x° to find y.
If 4 cos2 x° - 1 = 0 and 0 ≤ x ≤ 90, find
(i) x
(ii) sin2 x° + cos2 x°
(iii) cos2 x° - sin2 x°.
If sec θ = cosec θ and 0° ≤ θ ≤ 90°, find the value of θ.
