Mar 28, 2018 · Consider #\triangle ABC# to be right-angled in #B# and choose #\angle BCA# such that its measure is #45^o#. Since the triangle is isosceles, we can deduce that angle …

Nov 17, 2017 · tan(45^@)=1 sin(45^@)=sqrt2/2 cos(45^@)=sqrt2/2 45^@ is a special angle, along with 30^@, 60^@, 90^@, 180^@, 270^@, 360^@. tan(45^@)=1 sin(45^@)=sqrt2/2 …

Mar 31, 2018 · Use the #sin# angle addition formula:. #sin(color(red)A+color(blue)B)=sincolor(red)Acoscolor(blue)B+coscolor(red)Asincolor(blue)B#

Jul 31, 2015 · sin(45^o)=sqrt(2)/2~~0.7071... An angle of 45^o is an angle in the right triangle with equal catheti because another acute angel must be 45^o as well..

Mar 10, 2018 · What is the sin cos and tan of 45? Trigonometry Right Triangles Trigonometric Functions of Any Angle. 1 ...

Aug 14, 2015 · sin (60^@ + 45^@) = (sqrt(3) + 1)/(2sqrt(2)) Using the sine identity: sin (A +- B) = sin A cos B +- cos A sin B sin (60^@ + 45^@) = sin 60^@ cos 45^@ + cos 60^@ sin ...

Apr 6, 2018 · Given: #cos 45^@# From the trigonometry cofunction identities: #cos theta = sin (90^@ - theta)# Let #theta = 45^@: " " cos 45^@ = sin (90^@ - 45^@) = sin 45^@#

Oct 29, 2015 · What is the value of #sin -45^@#? How do you find the trigonometric functions of values that are greater than #360^@#? How do you use the reference angles to find …

May 10, 2018 · 0 Yes, it simplifies to give you zero. Now to make our lives easier, it would be better to turn the equation to: cos(45+a)cos(45-a) = sin(45-a)sin(45+a) This way we can …

Nov 2, 2016 · What is the value of #sin -45^@#? How do you find the trigonometric functions of values that are greater than #360^@#? How do you use the reference angles to find …