exam Maths Puzzle Numerical Ability

Can someone help me with this please. Thanks

Find a real-life application of a quadratic function

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exam Other Question

what is 0.5% of 300, what is 30% of 700 this is trig identities, if you could please help me prove the following identity true

sin2x / 1-cos2x = 2csc2x-tan

i hope this reads clearly

the left side of the equation is sin2x over 1-cos2x