Posted by CJ on Thursday, January 13, 2011 at 5:30pm.
sketch a right-angled triangle with hypotenuse 3 and opposite side as 2
by Pythagoras the adjacent side to angle alpha is √5
You should know the definition of the 6 trig ratios in terms of opposite, adjacent and hypotenuse
e.g. tan (alpha)= 2/√5
Related Questions
trig - FInd the exact value pf the 6 trig function of alpha Given: point (-2,-6...
trigonometry - given that sin alpha/2 = 2/3, and that alpha/2 is in quadrant II...
Trigonometry - a. Find the exact value of sin (theta - pi/6) b. Find the exact ...
Trigonometry - Find the exactly value of sin2(alpha) if cos(alpha) = 4/5 (alpha ...
Trigonometry - Find the counterexample to shows that the equation sec (alpha) - ...
maths (trigonometry) - sin(alpha-bita)=1/2 and cos(alpha+bita)=1/2, where alpha ...
Trigonometry - Prove that tan^2(alpha)-1+cos^2(alpha)sin^2(alpha) Please Explain
maths - Given that the roots of 2x^2-4x+5 are alpha and beta,find the value of...
Math - Given that sin alpha=4/sqrt65, pi/2<alpha<pi, and cos beta...
calculus - Interference Two identical tuning forks are struck, one a fraction of...
For Further Reading
