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Let the monthly salary of A be Rs. ‘x’ Amount spent on food = Rs. 0.30x Amount spent on rent = Rs. 0.22x Amount received by brother = (x – 0.30x – 0.22x) × 0.40 = 0.192x So according to question: => 0.22x – 0.192x = 1400 => 0.028x = 1400 => x = 50000 So, the amount spent on food = 0.30 × 50000 = Rs. 15000
If tan θ = 4/3 and θ is an acute angle, find the value of sin θ + cos θ.
If (sinθ+cosθ)/(sinθ-cosθ) = 2, then the value of sin4 θ is
If tanθ = (2/√5), then find the value of cos2 θ
If sin x + cos x = √2 sin x, then the value of sin x - cos x is:
If 4cos2x - 3 = 0, and (0° > x > 90°), then find the value of 'x'.
Take θ = 450
If cos²α + cos²β = 2, then the value of tan⁴α + sin⁸β is