Question: In problems, find each value without using a calculator. (a) cos[2sin-1(-2/3)] (b) tan[2tan-1(1/3)] (c) sin[cos-1(3/5) + cos-1(5/13)] (d) cos[cos-1(4/5) + sin-1(12/13)]

In problems, find each value without using a calculator.
(a) cos[2sin-1(-2/3)]
(b) tan[2tan-1(1/3)]
(c) sin[cos-1(3/5) + cos-1(5/13)]
(d) cos[cos-1(4/5) + sin-1(12/13)]

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