Question

Find the value of theta 1.Sin 270degree 2.Cos360degree 3.Tan -180degree 4.cot-270degree 5.Cosec 360degree​

Answer 1

Answer:

(1) we know that the formula of

sin(a+b)= sina*cosb+cosa*sinb

so, use this formula,

now,

sin270 = sin( 180+90)= sin180*cos90+cos180*sin90

= 0*0 + (-1)*1 = -1 ans