A ladder 20 m long is leaning against a vertical wall. It makes an angle of 30 deg with the ground. How high on the wall does the ladder reach?
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√[(1 sinA)/(1 + sinA)] is equal to?
If cos 2π/3c = x, then the value of x is
Determine the value of y-1y2 when y4+1y4=34
Find the value of x3 - y3, if x - y = 4 and xy = 12.
What will be the value of r2+p2+s2-rp-ps-rs when r = 4, p = 2, s = 8?
Which one of the following is an irrational number?
What are the roots of the quadratic equation: x2 + 3x - 154 = 0
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