Question

geometry class 9 please help guys its my todays paper I want to submit tomorrow ​

Answer 1

Step-by-step explanation:

hey if sin= root upon 2 then our angle ie theta is 60

so now now cos 60 is 1/2

thus cos theta=1/2

now then apply sin square+cos square=1

substitute values of sin and cos

so (root upon 2)whole squate+(1 upon 2 )whole square

you get 3/4+1/4

which is nothing but 1

so lhs=rhs