Find the maximum and minimum values of `a cos theta + b sin theta`

Find the maximum and minimum values of 7 costheta + 24 sin theta

Find cos^2 theta - sin^2 theta . .

Solve 2cos^2 theta+3 sin theta=0

Solve 7 cos^2 theta+3 sin^2 theta=4

Find dy/dx : x = r cos theta, y = r sin theta

lf 5 cos theta=7 sin theta , find the value of ( sin theta + cos theta)/(2 sin theta -3 cos theta) .

If tan theta =3/4 , find the value of cos^2 theta - sin^2 theta .

E is the mid point of the side AB of the square ABCD, if /_AED = theta then find the value of cos theta and sin theta .

solve : 2cos^2theta+4sin^2theta=3