Find the sign of the expression `sin theta + cos theta` when `theta = 100^0`

If sin theta=cos theta then find theta ?

Find the sign of sin theta+cos theta for theta=140^(@)

If "cosec"^(2) theta + 2 cot^(2) theta=10 , then find the value of sin theta + cos theta when 0^(@) lt theta lt 90^(@)

Find "sin" 2theta when "sin" theta+cos theta=1 .

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

If theta = 5pi/9 the sign of the expression cos theta + sin theta is____.

The value of the expression (sin3 theta+sin5 theta+sin7 theta+sin9 theta)/(cos3 theta+cos5 theta+cos7 theta+cos9 theta) when theta=(pi)/(18) is

Find the maximum and minimum values of the following expressions (i) a cos theta-b sin theta( ii) 7cos theta+24sin theta

find the value of the following expression cos^4theta-sin^4theta is :