Question

(sin 32° cos 58° + cos 32° sin 58°)/
(tan 20°. tan 70°)​

Answer 1

Answer:

1

Explanation:

use sin(A+B) form

we get

=sin(32+58)/ tan20.tan70

= sin 90 / tan20.tan70

=cot20.cot70

but we use tan (A + B)

then tan ( 20+ 70 ) = infinity

therefore dot product.of tan20.tan70 = 1