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I need help with 7-9!!! Does anyone know how to help? PLEASE

I need help with 7-9!!! Does anyone know how to help? PLEASE-example-1

1 Answer

9 votes

Answer:

see image.

Explanation:

For the pairs sec&csc,

tan&cot,

sin&cos

the ratios are equal IF the angles are complementary.

So like, EXAMPLE:

sin 20° = cos 70°

tan 10° = cot 80° or

sec 50° = csc 40°

^^^^these are not the answers! Just see the angles add up to 90°

So you just need to grab the angle info in the parenthesis and ADD it up and set it EQUAL TO 90°

and SOLVE for theta. See image.

I need help with 7-9!!! Does anyone know how to help? PLEASE-example-1
User Ganeshk
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