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If 7sin² ϕ + 3cos² ϕ= 4, then find the value of ϕ ?
The Value of (sin38˚)/(cos52˚)+ (cos12˚)/(sin78˚)- 4cos²60˚ is
Find the value of sin265o + sin225o + cos235o + cos255o.
...If sec2 θ = 4, then find the value of sin2 θ + cosec (90 - θ) where 0o < θ < 90o.
Given that 'θ' is an angle less than 120 ° , what is the value of 'θ' if it satisfies the equation 3cos 2 θ = 2 + sin 2
If tan A = 1 and tan B = √ 3, what is the value of cos A . cos B - sin A . sin B?
What is the value of (4/3) cot2 (p/6) + 3 cos2 (150o) – 4 cosec2 45o + 8 sin (p/2)?
...If 0 ≤ θ ≤ 90°, and sin(2 θ +50°) = cos (4 θ + 16°), then what is the value of θ (in degrees)?
If sec(2A + B) = 2 and cos(A + B) = (1/√2) , find the value of {sec 2B + tan (A + B) } given that 0o < A, B < 90o
