If the resultant of two forces P and Q acting at an angle makes an angle with P, then tan equals

• A. <img src="/_files/images/civil-engineering/applied-mechanics/99-5.6-1.png">
• B. <img src="/_files/images/civil-engineering/applied-mechanics/99-5.6-2.png">
• C. <img src="/_files/images/civil-engineering/applied-mechanics/99-5.6-3.png">
• D. <img src="/_files/images/civil-engineering/applied-mechanics/99-5.6-4.png">