Angular Form Radio Button with FormControl binding

https://stackoverflow.com/questions/49078286/angular-5-reactive-forms-radio-button-group

HTML

<form [formGroup]="form">
  <input type="radio" [value]="true" formControlName="gender">Male
  <input type="radio" [value]="false" formControlName="gender">Female
</form>

Component

get gender() {

    return this.formgroup.get("gender")

}

//

this.formGroup = this.formBuilder.group(

{

gender: [true, []]

})