Subject: Maths, asked on 14/5/18

## Prove that: Cos 570.sin 510+sin(-330)cos(-390)=0

Subject: Maths, asked on 12/5/18

## Q.1. sin A = k sin (A + B). Prove that: $\mathrm{tan}\left(A+B\right)=\frac{\mathrm{sin}B}{\mathrm{cos}B-k}$.

Subject: Maths, asked on 10/5/18

## Can we write: cos^2 (90-A)=sin^2 A

Subject: Maths, asked on 8/5/18

## Example 6. If cos x = - 3/5 , x lies in the third quadrant, find the values of other five trigonometric functions.

Subject: Maths, asked on 8/5/18

## Explain

Subject: Maths, asked on 8/5/18

## Explain

Subject: Maths, asked on 8/5/18

## Explain

Subject: Maths, asked on 8/5/18

## Explain

Subject: Maths, asked on 8/5/18

## Explain

Subject: Maths, asked on 8/5/18

## Explain

Subject: Maths, asked on 8/5/18

## Explain trigonometric functions

Subject: Maths, asked on 7/5/18

## A wheel makes 360 revolutions in one minute . through how many radians does it turn in one second?

Subject: Maths, asked on 7/5/18

## If the arc of the same length in two circles subtend angles 65 degree and 110 degree at the centre , find the ratio of their radii

Subject: Maths, asked on 7/5/18

## Find the radius of the circle in whuch a central angle of 60 degrees intercepts an arc of length 37.4 cm

Subject: Maths, asked on 7/5/18

## Example 19: If , show that $\mathrm{tan}\left(\alpha -\beta \right)=\left(1-n\right)\mathrm{tan}\alpha$

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