The ascending triangle pattern is a bullish continuation pattern in GBPJPY. There are 2 ways to trade this pattern.
1) Aggressive method (Long GBPJPY on breakout) Place a buy stop order on breakout above 173.50 SL 173.00 TP 175.00
2) Conservative method (wait for retracement) After GBPJPY breakout decisively above 173.50, wait for any pullback to 173.50. Place a buy limit order 173.50 SL 173.00 TP 175.00