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ANSWER

EXPLANATION

The given triangle has a right angle.

The side opposite to the 45° angle is 7 units.

To find angle x, we use the tangent ratio.

Recall the mnemonics TOA, which means,

To find y, we use the sine ratio, which means

see explanation

Step-by-step explanation:

Using the trig. ratios in the right triangle and

tan45° = 1, sin45° = , then

tan45° = =

Multiply both sides by x

x × 1 = 7 ⇒ x = 7

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sin45° = =

Multiply both sides by y

y × sin45° = 7 ( divide both sides by sin 45° )

y = 7 / sin45° = 7 / 1/ = 7

step-by-step explanation:

sas (side angle side)

aa (angle angle)

sss(side side side)

sas find two sides with an angle in between

aa is finding two angles and the third will add up to 180

sss find all sides

step-by-step explanation: