Question
(√ (5475.5) + √ (1024.2)) -
√ (4095.8) ÷ (√ (143.9) × √ (15.678) ÷ √ (36.08)) = ? What approximate value will come in place of question mark (?) in the given equations?Solution
Here the terms of the given expression can also be rounded off as (√ (5475.5) + √ (1024.2)) - √ (4095.8) ÷ (√ (143.9) × √ (15.678) ÷ √ (36.08)) = ? => ? = (74 + 32) - 64 ÷ (12 × 4/6) = 98
If tanθ – cotθ = a and cosθ + sinθ = b, then (b2 –1)(a2 + 4) = ?
If 2 sec 3x = 4, then the value of x:
Find the value of the given trigonometric expression:
(sin 15°cos 75° + cos²15°) × sin 30° + (cos 60°tan 45°) × sec 60°
...Find the maximum value of (20sin A + 15cos A).
If 5sin²x + 3cos²x − 4 = 0, then find the value of sinx, given that 0° < x < 90°.
If 7sin²θ + 3cos²θ = 4, then find the value of θ?
cos (sec-1 x) is equal to –
What is the value of sin(B – C) cos(A – D) + sin(A – B) cos(C – D) + sin(C – A) cos(B – D)?
- If tan3θ = 1, then find the value of: (sin² 2θ/sec 3θ + 15°)
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