Examlex
Verify that the equation is an identity.
-sin(x + y)- sin(x - y)= 2 cos x sin y
Q28: <span class="ql-formula" data-value="\mathrm { P } =
Q64: <span class="ql-formula" data-value="\mathrm { P } =
Q76: <span class="ql-formula" data-value="\tan x = 3.7"><span class="katex-display"><span
Q117: Find the quotient.<br> <span class="ql-formula" data-value="\frac
Q130: <span class="ql-formula" data-value="x = 3 t -
Q146: <span class="ql-formula" data-value="\theta = - 210 ^
Q212: <span class="ql-formula" data-value="\frac { \cos t }
Q225: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8181/.jpg" alt=" A)
Q290: Find the amplitude of <span
Q322: <span class="ql-formula" data-value="( 3 , - 3