Question

Without using trigonometric tables evaluate**
sin 35° cos 55° + cos 35ºsin 55°÷
cosec 10°– tan80°​

Answer 1

Answer:

You can evaluate them using formulas of complementary angles in that chapter

sin(90°-55°)×cos55°+cos35°×sin(90°-35°)÷cosec10°- tan80°

cos55°×cos55°+cos35°×cos35°÷cosec10°-tan80°

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