Ng4-ViewChild - Show ratio button based on condition using ViewChild

Ng4-ViewChild - Show ratio button based on condition using ViewChild
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<input id="EXCEL" name="EXCEL" value="EXCEL" type="radio" #radioCheckedExcel/>

import { Component, Output,OnInit,Input, EventEmitter, ViewChild, ElementRef } from '@angular/core';

export class NewReportsComponent implements OnInit {

  @ViewChild('radioCheckedExcel') private radioCheckedExcel: ElementRef;
 
 
  EventTriggerFunciton(){
  this.radioCheckedExcel.nativeElement.checked = true;
  }
 
  ResetRatioButton(){
  this.radioCheckedExcel.nativeElement.checked = false;
  }