Q28 of 40 Page 422

If secθ + tanθ = x, prove that sinθ =

Taking RHS

Now, sec²θ - tan²θ = 1 and (a + b)² = a² + b² + 2ab

Now, and , using these we have

= LHS

Hence, Proved !

Prove that

Evaluate:

Solve the following system of linear equations graphically:

2x - y = 1, x - y = -1.

Shade the region bounded by these lines and the y-axis.

The following table gives the yield per hectare of wheat of 100 farms of a village:

Change the above distribution to 'more than type' distribution and draw its ogive.